4+2a-7=-12

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Solution for 4+2a-7=-12 equation:


Simplifying
4 + 2a + -7 = -12

Reorder the terms:
4 + -7 + 2a = -12

Combine like terms: 4 + -7 = -3
-3 + 2a = -12

Solving
-3 + 2a = -12

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + 2a = -12 + 3

Combine like terms: -3 + 3 = 0
0 + 2a = -12 + 3
2a = -12 + 3

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

Divide each side by '2'.
a = -4.5

Simplifying
a = -4.5

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