x+15=3x+8

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Solution for x+15=3x+8 equation:


Simplifying
x + 15 = 3x + 8

Reorder the terms:
15 + x = 3x + 8

Reorder the terms:
15 + x = 8 + 3x

Solving
15 + 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.
15 + x + -3x = 8 + 3x + -3x

Combine like terms: x + -3x = -2x
15 + -2x = 8 + 3x + -3x

Combine like terms: 3x + -3x = 0
15 + -2x = 8 + 0
15 + -2x = 8

Add '-15' to each side of the equation.
15 + -15 + -2x = 8 + -15

Combine like terms: 15 + -15 = 0
0 + -2x = 8 + -15
-2x = 8 + -15

Combine like terms: 8 + -15 = -7
-2x = -7

Divide each side by '-2'.
x = 3.5

Simplifying
x = 3.5

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