4(42)-10=x

Solution for 4(42)-10=x equation:

Simplifying
4(42) + -10 = x

Multiply 4 * 42
168 + -10 = x

Combine like terms: 168 + -10 = 158
158 = x

Solving
158 = 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.
158 + -1x = x + -1x

Combine like terms: x + -1x = 0
158 + -1x = 0

Add '-158' to each side of the equation.
158 + -158 + -1x = 0 + -158

Combine like terms: 158 + -158 = 0
0 + -1x = 0 + -158
-1x = 0 + -158

Combine like terms: 0 + -158 = -158
-1x = -158

Divide each side by '-1'.
x = 158

Simplifying
x = 158