87 7/18 - 29 1/30= 42 2/35 - 29 1/30= 39 9/20 4/25)= 25 6/ 2/11)=

87.7/18-29.1/30=442/90-88/90=354/90=3.84/90=3.14/15
2)254/210-204/210=50/210=4.10
3)204/100-(48/100)=252/100=2.52/100=2.13/25
4)281/385-(-562/385)=843/385=2.73/385