Solve for d 15=2+4-d

$15 = 2 + 4 - d$

Step 1

Rewrite the equation as $2 + 4 - d = 15$ .

$2 + 4 - d = 15$

Step 2

Add $2$ and $4$ .

$6 - d = 15$

Step 3

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

Subtract $6$ from both sides of the equation.

$- d = 15 - 6$

Subtract $6$ from $15$ .

$- d = 9$

Step 4

Divide each term in $- d = 9$ by $- 1$ and simplify.

Divide each term in $- d = 9$ by $- 1$ .

$\frac{- d}{- 1} = \frac{9}{- 1}$

Simplify the left side.

Dividing two negative values results in a positive value.

$\frac{d}{1} = \frac{9}{- 1}$

Divide $d$ by $1$ .

$d = \frac{9}{- 1}$

Simplify the right side.

Divide $9$ by $- 1$ .

$d = - 9$