3X+4=X+13

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Solution for 3X+4=X+13 equation: 


Simplifying
3X + 4 = X + 13

Reorder the terms:
4 + 3X = X + 13

Reorder the terms:
4 + 3X = 13 + X

Solving
4 + 3X = 13 + 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.
4 + 3X + -1X = 13 + X + -1X

Combine like terms: 3X + -1X = 2X
4 + 2X = 13 + X + -1X

Combine like terms: X + -1X = 0
4 + 2X = 13 + 0
4 + 2X = 13

Add '-4' to each side of the equation.
4 + -4 + 2X = 13 + -4

Combine like terms: 4 + -4 = 0
0 + 2X = 13 + -4
2X = 13 + -4

Combine like terms: 13 + -4 = 9
2X = 9

Divide each side by '2'.
X = 4.5

Simplifying
X = 4.5

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