10+x+x=20

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Solution for 10+x+x=20 equation: 


Simplifying
10 + x + x = 20

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

Solving
10 + 2x = 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 + 2x = 20 + -10

Combine like terms: 10 + -10 = 0
0 + 2x = 20 + -10
2x = 20 + -10

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

Divide each side by '2'.
x = 5

Simplifying
x = 5

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