90=y+8x-20

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Solution for 90=y+8x-20 equation: 


Simplifying
90 = y + 8x + -20

Reorder the terms:
90 = -20 + 8x + y

Solving
90 = -20 + 8x + y

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
90 + -8x = -20 + 8x + -8x + y

Combine like terms: 8x + -8x = 0
90 + -8x = -20 + 0 + y
90 + -8x = -20 + y

Add '-90' to each side of the equation.
90 + -90 + -8x = -20 + -90 + y

Combine like terms: 90 + -90 = 0
0 + -8x = -20 + -90 + y
-8x = -20 + -90 + y

Combine like terms: -20 + -90 = -110
-8x = -110 + y

Divide each side by '-8'.
x = 13.75 + -0.125y

Simplifying
x = 13.75 + -0.125y

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