Basic Math Examples

$9 x + (y) i - 5 = - 12 i + 4$

Step 1

Reorder $- 12 i$ and $4$ .

$9 x + y i - 5 = 4 - 12 i$

Step 2

Move all terms not containing $y$ to the right side of the equation.

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Step 2.1

Subtract $9 x$ from both sides of the equation.

$y i - 5 = 4 - 12 i - 9 x$

Step 2.2

Add $5$ to both sides of the equation.

$y i = 4 - 12 i - 9 x + 5$

Step 2.3

Add $4$ and $5$ .

$y i = 9 - 12 i - 9 x$

Step 3

Divide each term in $y i = 9 - 12 i - 9 x$ by $i$ and simplify.

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Step 3.1

Divide each term in $y i = 9 - 12 i - 9 x$ by $i$ .

$\frac{y i}{i} = \frac{9}{i} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.2

Simplify the left side.

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Step 3.2.1

Cancel the common factor of $i$ .

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Step 3.2.1.1

Cancel the common factor.

$\frac{y i}{i} = \frac{9}{i} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.2.1.2

Divide $y$ by $1$ .

$y = \frac{9}{i} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3

Simplify the right side.

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Step 3.3.1

Simplify each term.

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Step 3.3.1.1

Multiply the numerator and denominator of $\frac{9}{i}$ by the conjugate of $i$ to make the denominator real.

$y = \frac{9}{i} \cdot \frac{i}{i} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.2

Multiply.

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Step 3.3.1.2.1

Combine.

$y = \frac{9 i}{i i} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.2.2

Simplify the denominator.

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Step 3.3.1.2.2.1

Raise $i$ to the power of $1$ .

$y = \frac{9 i}{i^{1} i} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.2.2.2

Raise $i$ to the power of $1$ .

$y = \frac{9 i}{i^{1} i^{1}} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.2.2.3

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = \frac{9 i}{i^{1 + 1}} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.2.2.4

Add $1$ and $1$ .

$y = \frac{9 i}{i^{2}} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.2.2.5

Rewrite $i^{2}$ as $- 1$ .

$y = \frac{9 i}{- 1} + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.3

Move the negative one from the denominator of $\frac{9 i}{- 1}$ .

$y = - 1 \cdot (9 i) + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.4

Rewrite $- 1 \cdot (9 i)$ as $- (9 i)$ .

$y = - (9 i) + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.5

Multiply $9$ by $- 1$ .

$y = - 9 i + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.6

Cancel the common factor of $i$ .

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Step 3.3.1.6.1

Cancel the common factor.

$y = - 9 i + \frac{- 12 i}{i} + \frac{- 9 x}{i}$

Step 3.3.1.6.2

Divide $- 12$ by $1$ .

$y = - 9 i - 12 + \frac{- 9 x}{i}$

Step 3.3.1.7

Multiply the numerator and denominator of $\frac{- 9 x}{i}$ by the conjugate of $i$ to make the denominator real.

$y = - 9 i - 12 + \frac{- 9 x}{i} \cdot \frac{i}{i}$

Step 3.3.1.8

Multiply.

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Step 3.3.1.8.1

Combine.

$y = - 9 i - 12 + \frac{- 9 x i}{i i}$

Step 3.3.1.8.2

Simplify the denominator.

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Step 3.3.1.8.2.1

Raise $i$ to the power of $1$ .

$y = - 9 i - 12 + \frac{- 9 x i}{i^{1} i}$

Step 3.3.1.8.2.2

Raise $i$ to the power of $1$ .

$y = - 9 i - 12 + \frac{- 9 x i}{i^{1} i^{1}}$

Step 3.3.1.8.2.3

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$y = - 9 i - 12 + \frac{- 9 x i}{i^{1 + 1}}$

Step 3.3.1.8.2.4

Add $1$ and $1$ .

$y = - 9 i - 12 + \frac{- 9 x i}{i^{2}}$

Step 3.3.1.8.2.5

Rewrite $i^{2}$ as $- 1$ .

$y = - 9 i - 12 + \frac{- 9 x i}{- 1}$

Step 3.3.1.9

Move the negative one from the denominator of $\frac{- 9 x i}{- 1}$ .

$y = - 9 i - 12 - 1 \cdot (- 9 x i)$

Step 3.3.1.10

Rewrite $- 1 \cdot (- 9 x i)$ as $- (- 9 x i)$ .

$y = - 9 i - 12 - (- 9 x i)$

Step 3.3.1.11

Multiply $- 9$ by $- 1$ .

$y = - 9 i - 12 + 9 x i$

Step 3.3.2

Reorder $- 9 i$ and $- 12$ .

$y = - 12 - 9 i + 9 x i$