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3.9w-17.9=(-2.3)
We simplify the equation to the form, which is simple to understand
3.9w-17.9=(-2.3)
Remove unnecessary parentheses
3.9w-17.9=-2.3
We move all terms containing w to the left and all other terms to the right.
+3.9w=-2.3+17.9
We simplify left and right side of the equation.
+3.9w=+15.6
We divide both sides of the equation by 3.9 to get w.
w=4
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