Solve for s -20+12s-15=20+7s

$- 20 + 12 s - 15 = 20 + 7 s$

Step 1

Subtract $15$ from $- 20$ .

$12 s - 35 = 20 + 7 s$

Step 2

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

Subtract $7 s$ from both sides of the equation.

$12 s - 35 - 7 s = 20$

Subtract $7 s$ from $12 s$ .

$5 s - 35 = 20$

Step 3

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

Add $35$ to both sides of the equation.

$5 s = 20 + 35$

Add $20$ and $35$ .

$5 s = 55$

Step 4

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

Divide each term in $5 s = 55$ by $5$ .

$\frac{5 s}{5} = \frac{55}{5}$

Simplify the left side.

Cancel the common factor of $5$ .

Cancel the common factor.

$\frac{5 s}{5} = \frac{55}{5}$

Divide $s$ by $1$ .

$s = \frac{55}{5}$

Simplify the right side.

Divide $55$ by $5$ .

$s = 11$