x+3x-12x=30-15

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Solution for x+3x-12x=30-15 equation: 


Simplifying
x + 3x + -12x = 30 + -15

Combine like terms: x + 3x = 4x
4x + -12x = 30 + -15

Combine like terms: 4x + -12x = -8x
-8x = 30 + -15

Combine like terms: 30 + -15 = 15
-8x = 15

Solving
-8x = 15

Solving for variable 'x'.

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

Divide each side by '-8'.
x = -1.875

Simplifying
x = -1.875

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