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 = -40
-40 + 4x = 20

Solving
-40 + 4x = 20

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 4x = 20 + 40

Combine like terms: -40 + 40 = 0
0 + 4x = 20 + 40
4x = 20 + 40

Combine like terms: 20 + 40 = 60
4x = 60

Divide each side by '4'.
x = 15

Simplifying
x = 15

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