86=-4+3(6+3a)

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Solution for 86=-4+3(6+3a) equation: 


Simplifying
86 = -4 + 3(6 + 3a)
86 = -4 + (6 * 3 + 3a * 3)
86 = -4 + (18 + 9a)

Combine like terms: -4 + 18 = 14
86 = 14 + 9a

Solving
86 = 14 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
86 + -9a = 14 + 9a + -9a

Combine like terms: 9a + -9a = 0
86 + -9a = 14 + 0
86 + -9a = 14

Add '-86' to each side of the equation.
86 + -86 + -9a = 14 + -86

Combine like terms: 86 + -86 = 0
0 + -9a = 14 + -86
-9a = 14 + -86

Combine like terms: 14 + -86 = -72
-9a = -72

Divide each side by '-9'.
a = 8

Simplifying
a = 8

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