45=x-39

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Solution for 45=x-39 equation:


Simplifying
45 = x + -39

Reorder the terms:
45 = -39 + x

Solving
45 = -39 + 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.
45 + -1x = -39 + x + -1x

Combine like terms: x + -1x = 0
45 + -1x = -39 + 0
45 + -1x = -39

Add '-45' to each side of the equation.
45 + -45 + -1x = -39 + -45

Combine like terms: 45 + -45 = 0
0 + -1x = -39 + -45
-1x = -39 + -45

Combine like terms: -39 + -45 = -84
-1x = -84

Divide each side by '-1'.
x = 84

Simplifying
x = 84

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