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-15(3)+7(5)=1
We simplify the equation to the form, which is simple to understand
-15(3)+7(5)=1
Reorder the terms in parentheses
+(-45)+7*(5)=1
Remove unnecessary parentheses
-45+7+*(+5+)=+1
Reorder the terms in parentheses
-45+(+35)=1
Remove unnecessary parentheses
-45+35=+1
We move all terms containing to the left and all other terms to the right.
0=+1+45-35
We simplify left and right side of the equation.
0=+11
0=11
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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