3w-9=4.2

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Solution for 3w-9=4.2 equation: 


Simplifying
3w + -9 = 4.2

Reorder the terms:
-9 + 3w = 4.2

Solving
-9 + 3w = 4.2

Solving for variable 'w'.

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

Add '9' to each side of the equation.
-9 + 9 + 3w = 4.2 + 9

Combine like terms: -9 + 9 = 0
0 + 3w = 4.2 + 9
3w = 4.2 + 9

Combine like terms: 4.2 + 9 = 13.2
3w = 13.2

Divide each side by '3'.
w = 4.4

Simplifying
w = 4.4

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