# 3x-15=-x-3

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## Solution for 3x-15=-x-3 equation:

Simplifying
3x + -15 = -1x + -3
Reorder the terms:
-15 + 3x = -1x + -3
Reorder the terms:
-15 + 3x = -3 + -1x
Solving
-15 + 3x = -3 + -1x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add 'x' to each side of the equation.
-15 + 3x + x = -3 + -1x + x
Combine like terms: 3x + x = 4x
-15 + 4x = -3 + -1x + x
Combine like terms: -1x + x = 0
-15 + 4x = -3 + 0
-15 + 4x = -3
Add '15' to each side of the equation.
-15 + 15 + 4x = -3 + 15
Combine like terms: -15 + 15 = 0
0 + 4x = -3 + 15
4x = -3 + 15
Combine like terms: -3 + 15 = 12
4x = 12
Divide each side by '4'.
x = 3
Simplifying
x = 3`