10-2x-x=-20

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Solution for 10-2x-x=-20 equation: 


Simplifying
10 + -2x + -1x = -20

Combine like terms: -2x + -1x = -3x
10 + -3x = -20

Solving
10 + -3x = -20

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 + -3x = -20 + -10

Combine like terms: 10 + -10 = 0
0 + -3x = -20 + -10
-3x = -20 + -10

Combine like terms: -20 + -10 = -30
-3x = -30

Divide each side by '-3'.
x = 10

Simplifying
x = 10

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