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7(4)-3(25)=42
We simplify the equation to the form, which is simple to understand
7(4)-3(25)=42
Reorder the terms in parentheses
+(+28)-3*(25)=42
Remove unnecessary parentheses
+28-3+*(+25+)=+42
Reorder the terms in parentheses
+28+(-75)=42
Remove unnecessary parentheses
+28-75=+42
We move all terms containing to the left and all other terms to the right.
0=+42-28+75
We simplify left and right side of the equation.
0=+89
0=89
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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