-9-(-8)=m

Solution for -9-(-8)=m equation:

Simplifying
-9 + -1(-8) = m

Multiply -1 * -8
-9 + 8 = m

Combine like terms: -9 + 8 = -1
-1 = m

Solving
-1 = m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-1m' to each side of the equation.
-1 + -1m = m + -1m

Combine like terms: m + -1m = 0
-1 + -1m = 0

Add '1' to each side of the equation.
-1 + 1 + -1m = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -1m = 0 + 1
-1m = 0 + 1

Combine like terms: 0 + 1 = 1
-1m = 1

Divide each side by '-1'.
m = -1

Simplifying
m = -1