1.
1) (3/8)+(1/4)=(3/8)+(2/8)=5/8
2)0,75=3/4
(3/4)-(5/8)=(6/8)-(5/8)=1/8=0,125
2.
1)0,25-(1/8)=(1/4)-(1/8)=(2/8)-(1/8)=1/8
2)(9/16)+(1/8)=(9/16)+(2/16)=11/16=0,6875
