42-w=39

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Solution for 42-w=39 equation: 


Simplifying
42 + -1w = 39

Solving
42 + -1w = 39

Solving for variable 'w'.

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

Add '-42' to each side of the equation.
42 + -42 + -1w = 39 + -42

Combine like terms: 42 + -42 = 0
0 + -1w = 39 + -42
-1w = 39 + -42

Combine like terms: 39 + -42 = -3
-1w = -3

Divide each side by '-1'.
w = 3

Simplifying
w = 3

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