7x-13=78

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Solution for 7x-13=78 equation: 


Simplifying
7x + -13 = 78

Reorder the terms:
-13 + 7x = 78

Solving
-13 + 7x = 78

Solving for variable 'x'.

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

Add '13' to each side of the equation.
-13 + 13 + 7x = 78 + 13

Combine like terms: -13 + 13 = 0
0 + 7x = 78 + 13
7x = 78 + 13

Combine like terms: 78 + 13 = 91
7x = 91

Divide each side by '7'.
x = 13

Simplifying
x = 13

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