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2(2)-4(-2)=-8
We simplify the equation to the form, which is simple to understand
2(2)-4(-2)=-8
Reorder the terms in parentheses
+(+4)-4*(-2)=-8
Remove unnecessary parentheses
+4-4+*(-2+)=-8
Reorder the terms in parentheses
+4+(+8)=-8
Remove unnecessary parentheses
+4+8=-8
We move all terms containing to the left and all other terms to the right.
0=-8-4-8
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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