1) -3•5/ 4•5 And 9•2/ 10•2 Because you want to have the same denominator. That equals -15/20 + 18/20 so you just add -15+18 to get 3/20
The answer is 3/20
No, since it is absolute value. The answer would simply be 5, since 5 - 10 is in the absolute value bars.
