20(X-8)=90

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Solution for 20(X-8)=90 equation: 


Simplifying
20(X + -8) = 90

Reorder the terms:
20(-8 + X) = 90
(-8 * 20 + X * 20) = 90
(-160 + 20X) = 90

Solving
-160 + 20X = 90

Solving for variable 'X'.

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

Add '160' to each side of the equation.
-160 + 160 + 20X = 90 + 160

Combine like terms: -160 + 160 = 0
0 + 20X = 90 + 160
20X = 90 + 160

Combine like terms: 90 + 160 = 250
20X = 250

Divide each side by '20'.
X = 12.5

Simplifying
X = 12.5

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