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2(28.3)+5+28.3=90
We simplify the equation to the form, which is simple to understand
2(28.3)+5+28.3=90
Reorder the terms in parentheses
+(+56.6)+5+28.3=90
Remove unnecessary parentheses
+56.6+5+28.3=+90
We move all terms containing to the left and all other terms to the right.
0=+90-56.6-5-28.3
We simplify left and right side of the equation.
0=0.099999999999998
0=0.099999999999998
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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