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3.9=8-0.5(90-8)
We simplify the equation to the form, which is simple to understand
3.9=8-0.5(90-8)
Simplifying terms in parentheses
3.9=8-0.5*(+82)
Reorder the terms in parentheses
3.9=8+(-41)
Remove unnecessary parentheses
+3.9=+8-41
We move all terms containing to the left and all other terms to the right.
0=+8-41-3.9
We simplify left and right side of the equation.
0=-36.9
0=-36.9
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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