(x-20)+40+(x-10)=180

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Solution for (x-20)+40+(x-10)=180 equation: 


Simplifying
(x + -20) + 40 + (x + -10) = 180

Reorder the terms:
(-20 + x) + 40 + (x + -10) = 180

Remove parenthesis around (-20 + x)
-20 + x + 40 + (x + -10) = 180

Reorder the terms:
-20 + x + 40 + (-10 + x) = 180

Remove parenthesis around (-10 + x)
-20 + x + 40 + -10 + x = 180

Reorder the terms:
-20 + 40 + -10 + x + x = 180

Combine like terms: -20 + 40 = 20
20 + -10 + x + x = 180

Combine like terms: 20 + -10 = 10
10 + x + x = 180

Combine like terms: x + x = 2x
10 + 2x = 180

Solving
10 + 2x = 180

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 2x = 180 + -10

Combine like terms: 10 + -10 = 0
0 + 2x = 180 + -10
2x = 180 + -10

Combine like terms: 180 + -10 = 170
2x = 170

Divide each side by '2'.
x = 85

Simplifying
x = 85

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