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 = -11
3x = -11

Divide each side by '3'.
x = -3.666666667

Simplifying
x = -3.666666667

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