Algebra Examples

$9 x - 7 = - 7$

Step 1

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

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Step 1.1

Add $7$ to both sides of the equation.

$9 x = - 7 + 7$

Step 1.2

Add $- 7$ and $7$ .

$9 x = 0$

Step 2

Divide each term in $9 x = 0$ by $9$ and simplify.

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Step 2.1

Divide each term in $9 x = 0$ by $9$ .

$\frac{9 x}{9} = \frac{0}{9}$

Step 2.2

Simplify the left side.

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Step 2.2.1

Cancel the common factor of $9$ .

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Step 2.2.1.1

Cancel the common factor.

$\frac{9 x}{9} = \frac{0}{9}$

Step 2.2.1.2

Divide $x$ by $1$ .

$x = \frac{0}{9}$

Step 2.3

Simplify the right side.

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Step 2.3.1

Divide $0$ by $9$ .

$x = 0$