-42=x-(-28)

Solution for -42=x-(-28) equation:

Simplifying
-42 = x + -1(-28)

Multiply -1 * -28
-42 = x + 28

Reorder the terms:
-42 = 28 + x

Solving
-42 = 28 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-42 + -1x = 28 + x + -1x

Combine like terms: x + -1x = 0
-42 + -1x = 28 + 0
-42 + -1x = 28

Add '42' to each side of the equation.
-42 + 42 + -1x = 28 + 42

Combine like terms: -42 + 42 = 0
0 + -1x = 28 + 42
-1x = 28 + 42

Combine like terms: 28 + 42 = 70
-1x = 70

Divide each side by '-1'.
x = -70

Simplifying
x = -70