45-x=3

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Solution for 45-x=3 equation: 


Simplifying
45 + -1x = 3

Solving
45 + -1x = 3

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 + -1x = 3 + -45

Combine like terms: 45 + -45 = 0
0 + -1x = 3 + -45
-1x = 3 + -45

Combine like terms: 3 + -45 = -42
-1x = -42

Divide each side by '-1'.
x = 42

Simplifying
x = 42

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