4[x-7]+12=20

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Solution for 4[x-7]+12=20 equation:


Simplifying
4[x + -7] + 12 = 20

Reorder the terms:
4[-7 + x] + 12 = 20
[-7 * 4 + x * 4] + 12 = 20
[-28 + 4x] + 12 = 20

Reorder the terms:
-28 + 12 + 4x = 20

Combine like terms: -28 + 12 = -16
-16 + 4x = 20

Solving
-16 + 4x = 20

Solving for variable 'x'.

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

Add '16' to each side of the equation.
-16 + 16 + 4x = 20 + 16

Combine like terms: -16 + 16 = 0
0 + 4x = 20 + 16
4x = 20 + 16

Combine like terms: 20 + 16 = 36
4x = 36

Divide each side by '4'.
x = 9

Simplifying
x = 9

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