-3x-4=15

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Solution for -3x-4=15 equation: 


Simplifying
-3x + -4 = 15

Reorder the terms:
-4 + -3x = 15

Solving
-4 + -3x = 15

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + -3x = 15 + 4

Combine like terms: -4 + 4 = 0
0 + -3x = 15 + 4
-3x = 15 + 4

Combine like terms: 15 + 4 = 19
-3x = 19

Divide each side by '-3'.
x = -6.333333333

Simplifying
x = -6.333333333

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