a+12+7a+18=

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Solution for a+12+7a+18= equation:


Simplifying
a + 12 + 7a + 18 = 0

Reorder the terms:
12 + 18 + a + 7a = 0

Combine like terms: 12 + 18 = 30
30 + a + 7a = 0

Combine like terms: a + 7a = 8a
30 + 8a = 0

Solving
30 + 8a = 0

Solving for variable 'a'.

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

Add '-30' to each side of the equation.
30 + -30 + 8a = 0 + -30

Combine like terms: 30 + -30 = 0
0 + 8a = 0 + -30
8a = 0 + -30

Combine like terms: 0 + -30 = -30
8a = -30

Divide each side by '8'.
a = -3.75

Simplifying
a = -3.75

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