7x+(6x-1)=90

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Solution for 7x+(6x-1)=90 equation:


Simplifying
7x + (6x + -1) = 90

Reorder the terms:
7x + (-1 + 6x) = 90

Remove parenthesis around (-1 + 6x)
7x + -1 + 6x = 90

Reorder the terms:
-1 + 7x + 6x = 90

Combine like terms: 7x + 6x = 13x
-1 + 13x = 90

Solving
-1 + 13x = 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 + 13x = 90 + 1

Combine like terms: -1 + 1 = 0
0 + 13x = 90 + 1
13x = 90 + 1

Combine like terms: 90 + 1 = 91
13x = 91

Divide each side by '13'.
x = 7

Simplifying
x = 7

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