-18=3(a+12)

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Solution for -18=3(a+12) equation:


Simplifying
-18 = 3(a + 12)

Reorder the terms:
-18 = 3(12 + a)
-18 = (12 * 3 + a * 3)
-18 = (36 + 3a)

Solving
-18 = 36 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
-18 + -3a = 36 + 3a + -3a

Combine like terms: 3a + -3a = 0
-18 + -3a = 36 + 0
-18 + -3a = 36

Add '18' to each side of the equation.
-18 + 18 + -3a = 36 + 18

Combine like terms: -18 + 18 = 0
0 + -3a = 36 + 18
-3a = 36 + 18

Combine like terms: 36 + 18 = 54
-3a = 54

Divide each side by '-3'.
a = -18

Simplifying
a = -18

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