X+2X-4=17

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Solution for X+2X-4=17 equation: 


Simplifying
X + 2X + -4 = 17

Reorder the terms:
-4 + X + 2X = 17

Combine like terms: X + 2X = 3X
-4 + 3X = 17

Solving
-4 + 3X = 17

Solving for variable 'X'.

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

Add '4' to each side of the equation.
-4 + 4 + 3X = 17 + 4

Combine like terms: -4 + 4 = 0
0 + 3X = 17 + 4
3X = 17 + 4

Combine like terms: 17 + 4 = 21
3X = 21

Divide each side by '3'.
X = 7

Simplifying
X = 7

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