4(3x+7)=-40+20

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Solution for 4(3x+7)=-40+20 equation:


Simplifying
4(3x + 7) = -40 + 20

Reorder the terms:
4(7 + 3x) = -40 + 20
(7 * 4 + 3x * 4) = -40 + 20
(28 + 12x) = -40 + 20

Combine like terms: -40 + 20 = -20
28 + 12x = -20

Solving
28 + 12x = -20

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + 12x = -20 + -28

Combine like terms: 28 + -28 = 0
0 + 12x = -20 + -28
12x = -20 + -28

Combine like terms: -20 + -28 = -48
12x = -48

Divide each side by '12'.
x = -4

Simplifying
x = -4

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