12+2a=3+7a+9

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Solution for 12+2a=3+7a+9 equation:


Simplifying
12 + 2a = 3 + 7a + 9

Reorder the terms:
12 + 2a = 3 + 9 + 7a

Combine like terms: 3 + 9 = 12
12 + 2a = 12 + 7a

Add '-12' to each side of the equation.
12 + -12 + 2a = 12 + -12 + 7a

Combine like terms: 12 + -12 = 0
0 + 2a = 12 + -12 + 7a
2a = 12 + -12 + 7a

Combine like terms: 12 + -12 = 0
2a = 0 + 7a
2a = 7a

Solving
2a = 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.
2a + -7a = 7a + -7a

Combine like terms: 2a + -7a = -5a
-5a = 7a + -7a

Combine like terms: 7a + -7a = 0
-5a = 0

Divide each side by '-5'.
a = 0

Simplifying
a = 0

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