-3(x+7)2=-42

Solution for -3(x+7)2=-42 equation:

Simplifying
-3(x + 7) * 2 = -42

Reorder the terms:
-3(7 + x) * 2 = -42

Reorder the terms for easier multiplication:
-3 * 2(7 + x) = -42

Multiply -3 * 2
-6(7 + x) = -42
(7 * -6 + x * -6) = -42
(-42 + -6x) = -42

Add '42' to each side of the equation.
-42 + 42 + -6x = -42 + 42

Combine like terms: -42 + 42 = 0
0 + -6x = -42 + 42
-6x = -42 + 42

Combine like terms: -42 + 42 = 0
-6x = 0

Solving
-6x = 0

Solving for variable 'x'.

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

Divide each side by '-6'.
x = 0

Simplifying
x = 0