7a+12-9a=22

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Solution for 7a+12-9a=22 equation:


Simplifying
7a + 12 + -9a = 22

Reorder the terms:
12 + 7a + -9a = 22

Combine like terms: 7a + -9a = -2a
12 + -2a = 22

Solving
12 + -2a = 22

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + -2a = 22 + -12

Combine like terms: 12 + -12 = 0
0 + -2a = 22 + -12
-2a = 22 + -12

Combine like terms: 22 + -12 = 10
-2a = 10

Divide each side by '-2'.
a = -5

Simplifying
a = -5

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