4(2x-2)+12=21

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Solution for 4(2x-2)+12=21 equation:


Simplifying
4(2x + -2) + 12 = 21

Reorder the terms:
4(-2 + 2x) + 12 = 21
(-2 * 4 + 2x * 4) + 12 = 21
(-8 + 8x) + 12 = 21

Reorder the terms:
-8 + 12 + 8x = 21

Combine like terms: -8 + 12 = 4
4 + 8x = 21

Solving
4 + 8x = 21

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 8x = 21 + -4

Combine like terms: 4 + -4 = 0
0 + 8x = 21 + -4
8x = 21 + -4

Combine like terms: 21 + -4 = 17
8x = 17

Divide each side by '8'.
x = 2.125

Simplifying
x = 2.125

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