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

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