-7(-x+21)=42

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Solution for -7(-x+21)=42 equation:


Simplifying
-7(-1x + 21) = 42

Reorder the terms:
-7(21 + -1x) = 42
(21 * -7 + -1x * -7) = 42
(-147 + 7x) = 42

Solving
-147 + 7x = 42

Solving for variable 'x'.

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

Add '147' to each side of the equation.
-147 + 147 + 7x = 42 + 147

Combine like terms: -147 + 147 = 0
0 + 7x = 42 + 147
7x = 42 + 147

Combine like terms: 42 + 147 = 189
7x = 189

Divide each side by '7'.
x = 27

Simplifying
x = 27

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