-28/9-(-5 5/9)
-28/9-(50/9)
-28/9-50/9
22/9
= 2 4/9= 2.444444
hope this helps!

To remove √3 from denominator, we multiply both numerator as well as denominator with √3
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Easy 130-89=41 so he has to save up 41 more dollars
K is the right answer for the problem!