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6.4+2.1(2-2)=8.5
We simplify the equation to the form, which is simple to understand
6.4+2.1(2-2)=8.5
Simplifying terms in parentheses
6.4+2.1*()=8.5
Reorder the terms in parentheses
6.4+()=8.5
Remove unnecessary parentheses
+6.40=+8.5
We move all terms containing to the left and all other terms to the right.
0=+8.5-6.4-0
We simplify left and right side of the equation.
0=+2.1
0=2.1
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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