21=-7(5x+7)

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Solution for 21=-7(5x+7) equation:


Simplifying
21 = -7(5x + 7)

Reorder the terms:
21 = -7(7 + 5x)
21 = (7 * -7 + 5x * -7)
21 = (-49 + -35x)

Solving
21 = -49 + -35x

Solving for variable 'x'.

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

Add '35x' to each side of the equation.
21 + 35x = -49 + -35x + 35x

Combine like terms: -35x + 35x = 0
21 + 35x = -49 + 0
21 + 35x = -49

Add '-21' to each side of the equation.
21 + -21 + 35x = -49 + -21

Combine like terms: 21 + -21 = 0
0 + 35x = -49 + -21
35x = -49 + -21

Combine like terms: -49 + -21 = -70
35x = -70

Divide each side by '35'.
x = -2

Simplifying
x = -2

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