3X+7-X=13

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Solution for 3X+7-X=13 equation:


Simplifying
3X + 7 + -1X = 13

Reorder the terms:
7 + 3X + -1X = 13

Combine like terms: 3X + -1X = 2X
7 + 2X = 13

Solving
7 + 2X = 13

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 + 2X = 13 + -7

Combine like terms: 7 + -7 = 0
0 + 2X = 13 + -7
2X = 13 + -7

Combine like terms: 13 + -7 = 6
2X = 6

Divide each side by '2'.
X = 3

Simplifying
X = 3

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