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(-4)(5)-(7)(56)=0
We simplify the equation to the form, which is simple to understand
(-4)*(5)-(7)*(56)=0
Reorder the terms in parentheses
multiplication of parentheses
(-20)-(7)*(56)=0
Remove unnecessary parentheses
-20-(7)*(56)=0
Reorder the terms in parentheses
multiplication of parentheses
-20-(+392)=0
Remove unnecessary parentheses
-20-392=0
We move all terms containing to the left and all other terms to the right.
0=0+20+392
We simplify left and right side of the equation.
0=+412
0=412
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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