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-5/9-(-7/9)=0
We simplify the equation to the form, which is simple to understand
-5/9-(-7/9)=0
Remove unnecessary parentheses
-0.55555555555556 + 0.77777777777778=0
We move all terms containing to the left and all other terms to the right.
0=0 + 0.55555555555556-0.77777777777778
We simplify left and right side of the equation.
0=-0.22222222222222
0=-0.22222222222222
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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