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(19+8)(4+3)/21+(8*15)/(4*3)=0
We simplify the equation to the form, which is simple to understand
(19+8)*(4+3)/21+(8*15)/(4*3)=0
Reorder the terms in parentheses
multiplication of parentheses
(+189)/21+(+120)/(+12)=0
Reorder the terms in parentheses
(+9)+(+120)/(+12)=0
Remove unnecessary parentheses
+9+(+120)/(+12)=0
Reorder the terms in parentheses
dividing of parentheses
+9+(+10)=0
Remove unnecessary parentheses
+9+10=0
We move all terms containing to the left and all other terms to the right.
0=0-9-10
We simplify left and right side of the equation.
0=-19
0=-19
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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