x(-2)+7=x(2)-21

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Solution for x(-2)+7=x(2)-21 equation:


Simplifying
x(-2) + 7 = x(2) + -21

Reorder the terms for easier multiplication:
-2x + 7 = x(2) + -21

Reorder the terms:
7 + -2x = x(2) + -21

Reorder the terms for easier multiplication:
7 + -2x = 2x + -21

Reorder the terms:
7 + -2x = -21 + 2x

Solving
7 + -2x = -21 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
7 + -2x + -2x = -21 + 2x + -2x

Combine like terms: -2x + -2x = -4x
7 + -4x = -21 + 2x + -2x

Combine like terms: 2x + -2x = 0
7 + -4x = -21 + 0
7 + -4x = -21

Add '-7' to each side of the equation.
7 + -7 + -4x = -21 + -7

Combine like terms: 7 + -7 = 0
0 + -4x = -21 + -7
-4x = -21 + -7

Combine like terms: -21 + -7 = -28
-4x = -28

Divide each side by '-4'.
x = 7

Simplifying
x = 7

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