7a-89=72

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Solution for 7a-89=72 equation: 


Simplifying
7a + -89 = 72

Reorder the terms:
-89 + 7a = 72

Solving
-89 + 7a = 72

Solving for variable 'a'.

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

Add '89' to each side of the equation.
-89 + 89 + 7a = 72 + 89

Combine like terms: -89 + 89 = 0
0 + 7a = 72 + 89
7a = 72 + 89

Combine like terms: 72 + 89 = 161
7a = 161

Divide each side by '7'.
a = 23

Simplifying
a = 23

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