84=3(4a+4)

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Solution for 84=3(4a+4) equation:


Simplifying
84 = 3(4a + 4)

Reorder the terms:
84 = 3(4 + 4a)
84 = (4 * 3 + 4a * 3)
84 = (12 + 12a)

Solving
84 = 12 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
84 + -12a = 12 + 12a + -12a

Combine like terms: 12a + -12a = 0
84 + -12a = 12 + 0
84 + -12a = 12

Add '-84' to each side of the equation.
84 + -84 + -12a = 12 + -84

Combine like terms: 84 + -84 = 0
0 + -12a = 12 + -84
-12a = 12 + -84

Combine like terms: 12 + -84 = -72
-12a = -72

Divide each side by '-12'.
a = 6

Simplifying
a = 6

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