8x-30=90

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Solution for 8x-30=90 equation: 


Simplifying
8x + -30 = 90

Reorder the terms:
-30 + 8x = 90

Solving
-30 + 8x = 90

Solving for variable 'x'.

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

Add '30' to each side of the equation.
-30 + 30 + 8x = 90 + 30

Combine like terms: -30 + 30 = 0
0 + 8x = 90 + 30
8x = 90 + 30

Combine like terms: 90 + 30 = 120
8x = 120

Divide each side by '8'.
x = 15

Simplifying
x = 15

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