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(4-20)/2*2-5*(-2)=0
We simplify the equation to the form, which is simple to understand
(4-20)/2*2-5*(-2)=0
Simplifying:
(4-20)/4-5*(-2)=0
Simplifying terms in parentheses
(-16)/4-5*(-2)=0
Reorder the terms in parentheses
(-4)-5*(-2)=0
Remove unnecessary parentheses
-4-5*(-2)=0
Reorder the terms in parentheses
-4+(+10)=0
Remove unnecessary parentheses
-4+10=0
We move all terms containing to the left and all other terms to the right.
0=0+4-10
We simplify left and right side of the equation.
0=-6
0=-6
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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