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 = 0
0 + 7x + 2x = 90
7x + 2x = 90

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

Solving
9x = 90

Solving for variable 'x'.

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

Divide each side by '9'.
x = 10

Simplifying
x = 10

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