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(1+-1/4)*(1+2/9)=0
We simplify the equation to the form, which is simple to understand
(1+-1/4)*(1+2/9)=0
Reorder the terms in parentheses
multiplication of parentheses
(+1.2222222222222-0+4.8888888888889)=0
Remove unnecessary parentheses
-0+6.1111111111111=0
We move all terms containing to the left and all other terms to the right.
0=0-6.1111111111111
We simplify left and right side of the equation.
0=-6.1111111111111
0=-6.1111111111111
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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