9a-2a+7=

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Solution for 9a-2a+7= equation: 


Simplifying
9a + -2a + 7 = 0

Reorder the terms:
7 + 9a + -2a = 0

Combine like terms: 9a + -2a = 7a
7 + 7a = 0

Solving
7 + 7a = 0

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 + 7a = 0 + -7

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

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

Divide each side by '7'.
a = -1

Simplifying
a = -1

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