Efectuati:a)1/2+5/3;b)1/2+2/5;c)5/1+1/6;d)7/12+1/24;e)1/18+7/36+11/72;f)3 2/3+1 1/6+2;g)1/28+7/72+1/84;h)1/8+1 1/3+4 1/2;i)2 1/10+3 1/35+1 3/14;j)7/120+11/240+1/400
CosmoteRo:
i).nu se intelege
Răspunsuri la întrebare
Răspuns de
11
1/2+5/3=3/6+10/6=13/6
1/2+2/5=5/10+4/10=9/10
5/1+1/6=30/6+1/6=31/6
7/12+1/24=14/24+1/24=15/24
1/18+7/36+11/72=4/72+14/72+11/72=29/72
2/3+1/6+2=4/6+1/6+3/6=8/6=4/3
1/28+7/72+1/84=18/504+49/502+6/504=73/504
1/8+11/3+41/2=3/24+88/24+492/24=583/24
21/10+
7/120+11/240+1/400=140/2400+110/2400+6/2400=256/2400=128/1200=64/600=32/300=16/150=8/75
1/2+2/5=5/10+4/10=9/10
5/1+1/6=30/6+1/6=31/6
7/12+1/24=14/24+1/24=15/24
1/18+7/36+11/72=4/72+14/72+11/72=29/72
2/3+1/6+2=4/6+1/6+3/6=8/6=4/3
1/28+7/72+1/84=18/504+49/502+6/504=73/504
1/8+11/3+41/2=3/24+88/24+492/24=583/24
21/10+
7/120+11/240+1/400=140/2400+110/2400+6/2400=256/2400=128/1200=64/600=32/300=16/150=8/75
Răspuns de
8
a) 1/2+5/3=(3+10)/6=13/6
b) 1/2+2/5= (5+4)/10=9/10
c)5/1+1/6= (30+5)6= 35/6
d)7/12+1/24=(14+1)/24=15/24= 5/8
e) 1/18+7/36=(3+7)/18= 10/18=5/9
f)3 2/3+1 1/6+2= 11/3+7/6+2= (66+21+36)/18= 123/18=41/6
g)1/28+7/72+1/84=(18+49+6)/504=73/504
i)2 1/10+3 1/35+1 3/14= 21/10+106/35+17/14= (147+212+85)/70= 444/70=
=222/35
j)7/120+11/240+1/400=( 70+55+3)/1200= 128/1200= 32/300=8/75
b) 1/2+2/5= (5+4)/10=9/10
c)5/1+1/6= (30+5)6= 35/6
d)7/12+1/24=(14+1)/24=15/24= 5/8
e) 1/18+7/36=(3+7)/18= 10/18=5/9
f)3 2/3+1 1/6+2= 11/3+7/6+2= (66+21+36)/18= 123/18=41/6
g)1/28+7/72+1/84=(18+49+6)/504=73/504
i)2 1/10+3 1/35+1 3/14= 21/10+106/35+17/14= (147+212+85)/70= 444/70=
=222/35
j)7/120+11/240+1/400=( 70+55+3)/1200= 128/1200= 32/300=8/75
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