7x-1+2x-1=90

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Solution for 7x-1+2x-1=90 equation:


Simplifying
7x + -1 + 2x + -1 = 90

Reorder the terms:
-1 + -1 + 7x + 2x = 90

Combine like terms: -1 + -1 = -2
-2 + 7x + 2x = 90

Combine like terms: 7x + 2x = 9x
-2 + 9x = 90

Solving
-2 + 9x = 90

Solving for variable 'x'.

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

Add '2' to each side of the equation.
-2 + 2 + 9x = 90 + 2

Combine like terms: -2 + 2 = 0
0 + 9x = 90 + 2
9x = 90 + 2

Combine like terms: 90 + 2 = 92
9x = 92

Divide each side by '9'.
x = 10.22222222

Simplifying
x = 10.22222222

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