-85-(42)=z

Solution for -85-(42)=z equation:

Simplifying
-85 + -1(42) = z

Multiply -1 * 42
-85 + -42 = z

Combine like terms: -85 + -42 = -127
-127 = z

Solving
-127 = z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
-127 + -1z = z + -1z

Combine like terms: z + -1z = 0
-127 + -1z = 0

Add '127' to each side of the equation.
-127 + 127 + -1z = 0 + 127

Combine like terms: -127 + 127 = 0
0 + -1z = 0 + 127
-1z = 0 + 127

Combine like terms: 0 + 127 = 127
-1z = 127

Divide each side by '-1'.
z = -127

Simplifying
z = -127