90-(7x+1)=9x-7

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Solution for 90-(7x+1)=9x-7 equation:


Simplifying
90 + -1(7x + 1) = 9x + -7

Reorder the terms:
90 + -1(1 + 7x) = 9x + -7
90 + (1 * -1 + 7x * -1) = 9x + -7
90 + (-1 + -7x) = 9x + -7

Combine like terms: 90 + -1 = 89
89 + -7x = 9x + -7

Reorder the terms:
89 + -7x = -7 + 9x

Solving
89 + -7x = -7 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
89 + -7x + -9x = -7 + 9x + -9x

Combine like terms: -7x + -9x = -16x
89 + -16x = -7 + 9x + -9x

Combine like terms: 9x + -9x = 0
89 + -16x = -7 + 0
89 + -16x = -7

Add '-89' to each side of the equation.
89 + -89 + -16x = -7 + -89

Combine like terms: 89 + -89 = 0
0 + -16x = -7 + -89
-16x = -7 + -89

Combine like terms: -7 + -89 = -96
-16x = -96

Divide each side by '-16'.
x = 6

Simplifying
x = 6

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