120=-4+4(3+4a)

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Solution for 120=-4+4(3+4a) equation:


Simplifying
120 = -4 + 4(3 + 4a)
120 = -4 + (3 * 4 + 4a * 4)
120 = -4 + (12 + 16a)

Combine like terms: -4 + 12 = 8
120 = 8 + 16a

Solving
120 = 8 + 16a

Solving for variable 'a'.

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

Add '-16a' to each side of the equation.
120 + -16a = 8 + 16a + -16a

Combine like terms: 16a + -16a = 0
120 + -16a = 8 + 0
120 + -16a = 8

Add '-120' to each side of the equation.
120 + -120 + -16a = 8 + -120

Combine like terms: 120 + -120 = 0
0 + -16a = 8 + -120
-16a = 8 + -120

Combine like terms: 8 + -120 = -112
-16a = -112

Divide each side by '-16'.
a = 7

Simplifying
a = 7

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