-x-9-3x=-45

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


Simplifying
-1x + -9 + -3x = -45

Reorder the terms:
-9 + -1x + -3x = -45

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

Solving
-9 + -4x = -45

Solving for variable 'x'.

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

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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