8x+(x-10)+(x-20)=360

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Solution for 8x+(x-10)+(x-20)=360 equation: 


Simplifying
8x + (x + -10) + (x + -20) = 360

Reorder the terms:
8x + (-10 + x) + (x + -20) = 360

Remove parenthesis around (-10 + x)
8x + -10 + x + (x + -20) = 360

Reorder the terms:
8x + -10 + x + (-20 + x) = 360

Remove parenthesis around (-20 + x)
8x + -10 + x + -20 + x = 360

Reorder the terms:
-10 + -20 + 8x + x + x = 360

Combine like terms: -10 + -20 = -30
-30 + 8x + x + x = 360

Combine like terms: 8x + x = 9x
-30 + 9x + x = 360

Combine like terms: 9x + x = 10x
-30 + 10x = 360

Solving
-30 + 10x = 360

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 + 10x = 360 + 30

Combine like terms: -30 + 30 = 0
0 + 10x = 360 + 30
10x = 360 + 30

Combine like terms: 360 + 30 = 390
10x = 390

Divide each side by '10'.
x = 39

Simplifying
x = 39

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