13a-7=90

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Solution for 13a-7=90 equation: 


Simplifying
13a + -7 = 90

Reorder the terms:
-7 + 13a = 90

Solving
-7 + 13a = 90

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 + 13a = 90 + 7

Combine like terms: -7 + 7 = 0
0 + 13a = 90 + 7
13a = 90 + 7

Combine like terms: 90 + 7 = 97
13a = 97

Divide each side by '13'.
a = 7.461538462

Simplifying
a = 7.461538462

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