Question 686108
10/9÷21/20
{{{(10/9)/(21/20) = (10/9)(20/21) = 200/189}}}
...
-10/3*(5/6-4/5)
{{{(-10/3)(5/6-4/5) = (-10/3)((5/6)(5/5)-(4/5)(6/6)) = (-10/3)(25/30-24/30) = (-10/3)(1/30) = -10/90 = -1/9}}}
...
3x/2-5/4
{{{(3/2)x - 5/4}}} ==> cannot subtract unlike terms
...
(-2/3)^2÷4/15
{{{(-2/3)^2/(4/15) = (4/9)(15/4) = 5/3}}}
..............................
Have more questions?
HomeworkHelpers@ReadingBoosters.com.
Delighted to help!
-Reading Boosters
Website: www.MyHomeworkAnswers.com