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7e+3(6-e)=15
We simplify the equation to the form, which is simple to understand
7e+3(6-e)=15
Reorder the terms in parentheses
7e+(+18-3e)=15
Remove unnecessary parentheses
+7e+18-3e=+15
We move all terms containing e to the left and all other terms to the right.
+7e-3e=+15-18
We simplify left and right side of the equation.
+4e=-3
We divide both sides of the equation by 4 to get e.
e=-0.75
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