2a+7-7=9

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


Simplifying
2a + 7 + -7 = 9

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

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

Solving
2a = 9

Solving for variable 'a'.

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

Divide each side by '2'.
a = 4.5

Simplifying
a = 4.5

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