Basic Math Examples

$- 9 d - 55 = - 4 d$

Step 1

Move all terms containing $d$ to the left side of the equation.

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Step 1.1

Add $4 d$ to both sides of the equation.

$- 9 d - 55 + 4 d = 0$

Step 1.2

Add $- 9 d$ and $4 d$ .

$- 5 d - 55 = 0$

Step 2

Add $55$ to both sides of the equation.

$- 5 d = 55$

Step 3

Divide each term in $- 5 d = 55$ by $- 5$ and simplify.

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Step 3.1

Divide each term in $- 5 d = 55$ by $- 5$ .

$\frac{- 5 d}{- 5} = \frac{55}{- 5}$

Step 3.2

Simplify the left side.

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Step 3.2.1

Cancel the common factor of $- 5$ .

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Step 3.2.1.1

Cancel the common factor.

$\frac{- 5 d}{- 5} = \frac{55}{- 5}$

Step 3.2.1.2

Divide $d$ by $1$ .

$d = \frac{55}{- 5}$

Step 3.3

Simplify the right side.

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Step 3.3.1

Divide $55$ by $- 5$ .

$d = - 11$