X+5=3X-8

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Solution for X+5=3X-8 equation:


Simplifying
X + 5 = 3X + -8

Reorder the terms:
5 + X = 3X + -8

Reorder the terms:
5 + X = -8 + 3X

Solving
5 + X = -8 + 3X

Solving for variable 'X'.

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

Add '-3X' to each side of the equation.
5 + X + -3X = -8 + 3X + -3X

Combine like terms: X + -3X = -2X
5 + -2X = -8 + 3X + -3X

Combine like terms: 3X + -3X = 0
5 + -2X = -8 + 0
5 + -2X = -8

Add '-5' to each side of the equation.
5 + -5 + -2X = -8 + -5

Combine like terms: 5 + -5 = 0
0 + -2X = -8 + -5
-2X = -8 + -5

Combine like terms: -8 + -5 = -13
-2X = -13

Divide each side by '-2'.
X = 6.5

Simplifying
X = 6.5

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