13x-9=90

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Solution for 13x-9=90 equation: 


Simplifying
13x + -9 = 90

Reorder the terms:
-9 + 13x = 90

Solving
-9 + 13x = 90

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 13x = 90 + 9

Combine like terms: -9 + 9 = 0
0 + 13x = 90 + 9
13x = 90 + 9

Combine like terms: 90 + 9 = 99
13x = 99

Divide each side by '13'.
x = 7.615384615

Simplifying
x = 7.615384615

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