4(3+5x)=-128

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Solution for 4(3+5x)=-128 equation: 


Simplifying
4(3 + 5x) = -128
(3 * 4 + 5x * 4) = -128
(12 + 20x) = -128

Solving
12 + 20x = -128

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 20x = -128 + -12

Combine like terms: 12 + -12 = 0
0 + 20x = -128 + -12
20x = -128 + -12

Combine like terms: -128 + -12 = -140
20x = -140

Divide each side by '20'.
x = -7

Simplifying
x = -7

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