8x+7-9=90

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Solution for 8x+7-9=90 equation: 


Simplifying
8x + 7 + -9 = 90

Reorder the terms:
7 + -9 + 8x = 90

Combine like terms: 7 + -9 = -2
-2 + 8x = 90

Solving
-2 + 8x = 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 + 8x = 90 + 2

Combine like terms: -2 + 2 = 0
0 + 8x = 90 + 2
8x = 90 + 2

Combine like terms: 90 + 2 = 92
8x = 92

Divide each side by '8'.
x = 11.5

Simplifying
x = 11.5

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