Question

-1/8+9/10 answered in lowest trems

Answer 1

To anwer this question we need to remember that:

`(a)/(b)+(c)/(d)=(ad+bc)/(bd)`

With this in mind, let's make the operation:

`-(1)/(8)+(9)/(10)=(-10+72)/(80)=(62)/(80)=(31)/(40)`

Therefore the answer is 31/40