(15/8 + 2/5) + (-7/8)
Do the followingfind a common denominator 5x8=40get all your denominator values the samenext solve(5×15)+(8×2)+(5×(-7))/(40)so you get this next75+16-35/(40)then you have56/40which reduces down to7/5
7/5 is your answer, Hope this helps.