Sum or difference

Illustrate the sum or difference of the following expressions
1. 4/8+1/2=
2. 5/6-1/4=
3. 4-3/6=
4. 3/4+1/3=
5. 9/10-2/5=

Correct answer:

a =  1
b =  7/12
c =  7/2 = 3 12
d =  13/12 = 1 112
e =  1/2

Step-by-step explanation:

a=84+21=1
b=6541=127=0.5833
c=463=27=321=3.5
d=43+31=1213=1121=1.0833
e=10952=21=0.5



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