-x-3x-5=12+3

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


Simplifying
-1x + -3x + -5 = 12 + 3

Reorder the terms:
-5 + -1x + -3x = 12 + 3

Combine like terms: -1x + -3x = -4x
-5 + -4x = 12 + 3

Combine like terms: 12 + 3 = 15
-5 + -4x = 15

Solving
-5 + -4x = 15

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + -4x = 15 + 5

Combine like terms: -5 + 5 = 0
0 + -4x = 15 + 5
-4x = 15 + 5

Combine like terms: 15 + 5 = 20
-4x = 20

Divide each side by '-4'.
x = -5

Simplifying
x = -5

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