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16-4(1)(9)=0
We simplify the equation to the form, which is simple to understand
16-4(1)*(9)=0
Reorder the terms in parentheses
multiplication of parentheses
16-4*(+9)=0
Reorder the terms in parentheses
16+(-36)=0
Remove unnecessary parentheses
+16-36=0
We move all terms containing to the left and all other terms to the right.
0=0-16+36
We simplify left and right side of the equation.
0=+20
0=20
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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