-21=-7(x+10)

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Solution for -21=-7(x+10) equation:


Simplifying
-21 = -7(x + 10)

Reorder the terms:
-21 = -7(10 + x)
-21 = (10 * -7 + x * -7)
-21 = (-70 + -7x)

Solving
-21 = -70 + -7x

Solving for variable 'x'.

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

Add '7x' to each side of the equation.
-21 + 7x = -70 + -7x + 7x

Combine like terms: -7x + 7x = 0
-21 + 7x = -70 + 0
-21 + 7x = -70

Add '21' to each side of the equation.
-21 + 21 + 7x = -70 + 21

Combine like terms: -21 + 21 = 0
0 + 7x = -70 + 21
7x = -70 + 21

Combine like terms: -70 + 21 = -49
7x = -49

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

Simplifying
x = -7

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