-5+12+3a=9a-7a

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Solution for -5+12+3a=9a-7a equation:


Simplifying
-5 + 12 + 3a = 9a + -7a

Combine like terms: -5 + 12 = 7
7 + 3a = 9a + -7a

Combine like terms: 9a + -7a = 2a
7 + 3a = 2a

Solving
7 + 3a = 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
7 + 3a + -2a = 2a + -2a

Combine like terms: 3a + -2a = 1a
7 + 1a = 2a + -2a

Combine like terms: 2a + -2a = 0
7 + 1a = 0

Add '-7' to each side of the equation.
7 + -7 + 1a = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 1a = 0 + -7
1a = 0 + -7

Combine like terms: 0 + -7 = -7
1a = -7

Divide each side by '1'.
a = -7

Simplifying
a = -7

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