10+x+2x=40

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Solution for 10+x+2x=40 equation: 


Simplifying
10 + x + 2x = 40

Combine like terms: x + 2x = 3x
10 + 3x = 40

Solving
10 + 3x = 40

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 = 40 + -10

Combine like terms: 10 + -10 = 0
0 + 3x = 40 + -10
3x = 40 + -10

Combine like terms: 40 + -10 = 30
3x = 30

Divide each side by '3'.
x = 10

Simplifying
x = 10

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