3a-5+2a+7=12

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Solution for 3a-5+2a+7=12 equation:


Simplifying
3a + -5 + 2a + 7 = 12

Reorder the terms:
-5 + 7 + 3a + 2a = 12

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

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

Solving
2 + 5a = 12

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + 5a = 12 + -2

Combine like terms: 2 + -2 = 0
0 + 5a = 12 + -2
5a = 12 + -2

Combine like terms: 12 + -2 = 10
5a = 10

Divide each side by '5'.
a = 2

Simplifying
a = 2

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