3x+5x-15=12

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Solution for 3x+5x-15=12 equation:


Simplifying
3x + 5x + -15 = 12

Reorder the terms:
-15 + 3x + 5x = 12

Combine like terms: 3x + 5x = 8x
-15 + 8x = 12

Solving
-15 + 8x = 12

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 8x = 12 + 15

Combine like terms: -15 + 15 = 0
0 + 8x = 12 + 15
8x = 12 + 15

Combine like terms: 12 + 15 = 27
8x = 27

Divide each side by '8'.
x = 3.375

Simplifying
x = 3.375

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