a+9-7=0

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Solution for a+9-7=0 equation: 


Simplifying
a + 9 + -7 = 0

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

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

Solving
2 + a = 0

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 + a = 0 + -2

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

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

Simplifying
a = -2

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