3a+12=-7a-8

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Solution for 3a+12=-7a-8 equation:


Simplifying
3a + 12 = -7a + -8

Reorder the terms:
12 + 3a = -7a + -8

Reorder the terms:
12 + 3a = -8 + -7a

Solving
12 + 3a = -8 + -7a

Solving for variable 'a'.

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

Add '7a' to each side of the equation.
12 + 3a + 7a = -8 + -7a + 7a

Combine like terms: 3a + 7a = 10a
12 + 10a = -8 + -7a + 7a

Combine like terms: -7a + 7a = 0
12 + 10a = -8 + 0
12 + 10a = -8

Add '-12' to each side of the equation.
12 + -12 + 10a = -8 + -12

Combine like terms: 12 + -12 = 0
0 + 10a = -8 + -12
10a = -8 + -12

Combine like terms: -8 + -12 = -20
10a = -20

Divide each side by '10'.
a = -2

Simplifying
a = -2

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