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(21/3)-2(3)=0
We simplify the equation to the form, which is simple to understand
(21/3)-2(3)=0
Simplifying:
(+7)-2*(3)=0
Remove unnecessary parentheses
+7-2*(3)=0
Reorder the terms in parentheses
+7+(-6)=0
Remove unnecessary parentheses
+7-6=0
We move all terms containing to the left and all other terms to the right.
0=0-7+6
We simplify left and right side of the equation.
0=-1
0=-1
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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