7+x+2x=19

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Solution for 7+x+2x=19 equation: 


Simplifying
7 + x + 2x = 19

Combine like terms: x + 2x = 3x
7 + 3x = 19

Solving
7 + 3x = 19

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 3x = 19 + -7

Combine like terms: 7 + -7 = 0
0 + 3x = 19 + -7
3x = 19 + -7

Combine like terms: 19 + -7 = 12
3x = 12

Divide each side by '3'.
x = 4

Simplifying
x = 4

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