Question

a) 9 intregi 3 pe 4+3 intregi 1pe6
b) 7 intregi 8 pe15+8intregi 17pe20
c) 11 intregi 7 pe12+6 intregi 11pe18
d) 7 intregi 3 pe8+11intregi 7pe12
e) 3intregi 5 pe9+1intregi 7pe12
f) 3intregi 1pe7+4pe5
g) 3intregi 1 pe14+2intregi 4pe21

Answer 1

a)9 3/4+3 1/6=
((9x4)+3)/4+((3x6)+1)/6=
39/4+19/6=
numitor comun 12
(117+38)/12=155/12=12 intregi 11/12

b)7 8/15+8 17/20=
(105+8)/15+(160+17)20=
113/15+177/20=
numitor 60
(113x4)/60+(177x3)/60=
452/60+531/60=
983/60=16 23/60

c)11 7/12+6 11/18=
139/12+119/18=
numitor 36
139x3)/36+(119x2)/36=
417/36+238/36=
655/36=18 intregi 7/36

d)7 3/8+11 7/12=
59/8+139/12=
numitor 24
(59x3)/24+(139x2)/24=
177/24+278/24=
455/24=18 23/24

e)3 5/9+1 7/12=
32/9+19/12=
numitor 36
(32x4)/36+(19x3)/36=
128/36+57/36=
185/36=5 intregi 5/36

f)3 1/7+4/5=
22/7+4/5=
numitor 35
(22x5)/35+28/35=
(110+28)/35=
138/35=3 intregi 33/35

g)3 1/14+2 4/21=
43/14+46/21=
numitor 42
129/42+92/42=
221/42=
5 intregi 11/42