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(7/5)*(3/1)=0
We simplify the equation to the form, which is simple to understand
(7/5)*(3/1)=0
Reorder the terms in parentheses
multiplication of parentheses
(+4.2)=0
Remove unnecessary parentheses
+4.2=0
We move all terms containing to the left and all other terms to the right.
0=0-4.2
We simplify left and right side of the equation.
0=-4.2
0=-4.2
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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