3a+2a+7=12

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


Simplifying
3a + 2a + 7 = 12

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

Combine like terms: 3a + 2a = 5a
7 + 5a = 12

Solving
7 + 5a = 12

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + 5a = 12 + -7

Combine like terms: 7 + -7 = 0
0 + 5a = 12 + -7
5a = 12 + -7

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

Divide each side by '5'.
a = 1

Simplifying
a = 1

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