7(-1x-8)=21

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Solution for 7(-1x-8)=21 equation:


Simplifying
7(-1x + -8) = 21

Reorder the terms:
7(-8 + -1x) = 21
(-8 * 7 + -1x * 7) = 21
(-56 + -7x) = 21

Solving
-56 + -7x = 21

Solving for variable 'x'.

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

Add '56' to each side of the equation.
-56 + 56 + -7x = 21 + 56

Combine like terms: -56 + 56 = 0
0 + -7x = 21 + 56
-7x = 21 + 56

Combine like terms: 21 + 56 = 77
-7x = 77

Divide each side by '-7'.
x = -11

Simplifying
x = -11

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