4x-45=39

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Solution for 4x-45=39 equation: 


Simplifying
4x + -45 = 39

Reorder the terms:
-45 + 4x = 39

Solving
-45 + 4x = 39

Solving for variable 'x'.

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

Add '45' to each side of the equation.
-45 + 45 + 4x = 39 + 45

Combine like terms: -45 + 45 = 0
0 + 4x = 39 + 45
4x = 39 + 45

Combine like terms: 39 + 45 = 84
4x = 84

Divide each side by '4'.
x = 21

Simplifying
x = 21

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