-3x-9=x-45

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Solution for -3x-9=x-45 equation:


Simplifying
-3x + -9 = x + -45

Reorder the terms:
-9 + -3x = x + -45

Reorder the terms:
-9 + -3x = -45 + x

Solving
-9 + -3x = -45 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-9 + -3x + -1x = -45 + x + -1x

Combine like terms: -3x + -1x = -4x
-9 + -4x = -45 + x + -1x

Combine like terms: x + -1x = 0
-9 + -4x = -45 + 0
-9 + -4x = -45

Add '9' to each side of the equation.
-9 + 9 + -4x = -45 + 9

Combine like terms: -9 + 9 = 0
0 + -4x = -45 + 9
-4x = -45 + 9

Combine like terms: -45 + 9 = -36
-4x = -36

Divide each side by '-4'.
x = 9

Simplifying
x = 9

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