(185-2x)+(x-20)=90

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Solution for (185-2x)+(x-20)=90 equation: 


Simplifying
(185 + -2x) + (x + -20) = 90

Remove parenthesis around (185 + -2x)
185 + -2x + (x + -20) = 90

Reorder the terms:
185 + -2x + (-20 + x) = 90

Remove parenthesis around (-20 + x)
185 + -2x + -20 + x = 90

Reorder the terms:
185 + -20 + -2x + x = 90

Combine like terms: 185 + -20 = 165
165 + -2x + x = 90

Combine like terms: -2x + x = -1x
165 + -1x = 90

Solving
165 + -1x = 90

Solving for variable 'x'.

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

Add '-165' to each side of the equation.
165 + -165 + -1x = 90 + -165

Combine like terms: 165 + -165 = 0
0 + -1x = 90 + -165
-1x = 90 + -165

Combine like terms: 90 + -165 = -75
-1x = -75

Divide each side by '-1'.
x = 75

Simplifying
x = 75

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