10+x+x=20+x

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Solution for 10+x+x=20+x equation: 


Simplifying
10 + x + x = 20 + x

Combine like terms: x + x = 2x
10 + 2x = 20 + x

Solving
10 + 2x = 20 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
10 + 2x + -1x = 20 + x + -1x

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

Combine like terms: x + -1x = 0
10 + 1x = 20 + 0
10 + 1x = 20

Add '-10' to each side of the equation.
10 + -10 + 1x = 20 + -10

Combine like terms: 10 + -10 = 0
0 + 1x = 20 + -10
1x = 20 + -10

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

Divide each side by '1'.
x = 10

Simplifying
x = 10

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