-3+x-4x=-15

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Solution for -3+x-4x=-15 equation: 


Simplifying
-3 + x + -4x = -15

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

Solving
-3 + -3x = -15

Solving for variable 'x'.

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

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

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

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

Divide each side by '-3'.
x = 4

Simplifying
x = 4

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