5x-1+7x=90

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Solution for 5x-1+7x=90 equation:


Simplifying
5x + -1 + 7x = 90

Reorder the terms:
-1 + 5x + 7x = 90

Combine like terms: 5x + 7x = 12x
-1 + 12x = 90

Solving
-1 + 12x = 90

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + 12x = 90 + 1

Combine like terms: -1 + 1 = 0
0 + 12x = 90 + 1
12x = 90 + 1

Combine like terms: 90 + 1 = 91
12x = 91

Divide each side by '12'.
x = 7.583333333

Simplifying
x = 7.583333333

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