7x-20+5x=90

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Solution for 7x-20+5x=90 equation:


Simplifying
7x + -20 + 5x = 90

Reorder the terms:
-20 + 7x + 5x = 90

Combine like terms: 7x + 5x = 12x
-20 + 12x = 90

Solving
-20 + 12x = 90

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 12x = 90 + 20

Combine like terms: -20 + 20 = 0
0 + 12x = 90 + 20
12x = 90 + 20

Combine like terms: 90 + 20 = 110
12x = 110

Divide each side by '12'.
x = 9.166666667

Simplifying
x = 9.166666667

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