3X+5X-8=15-X

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Solution for 3X+5X-8=15-X equation:


Simplifying
3X + 5X + -8 = 15 + -1X

Reorder the terms:
-8 + 3X + 5X = 15 + -1X

Combine like terms: 3X + 5X = 8X
-8 + 8X = 15 + -1X

Solving
-8 + 8X = 15 + -1X

Solving for variable 'X'.

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

Add 'X' to each side of the equation.
-8 + 8X + X = 15 + -1X + X

Combine like terms: 8X + X = 9X
-8 + 9X = 15 + -1X + X

Combine like terms: -1X + X = 0
-8 + 9X = 15 + 0
-8 + 9X = 15

Add '8' to each side of the equation.
-8 + 8 + 9X = 15 + 8

Combine like terms: -8 + 8 = 0
0 + 9X = 15 + 8
9X = 15 + 8

Combine like terms: 15 + 8 = 23
9X = 23

Divide each side by '9'.
X = 2.555555556

Simplifying
X = 2.555555556

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