oblicz 1/4 + 1/5 = 2/3 + 5/7= 1i 1/10 +5 i 4/5= 5/6 + 3i11/12= 1/4 + 1/5 + 3/10 = 5 + 7 i 8/9 + 4 i 1/2 = 6/7 - 3/4= 12/13 - 2/5= 1i 2/3 - 1/6= 2i 1/2 - 1i 3/4 = 12i 7/10 - 8i 7/8 = 4i 7/9 - 2 i 11/12
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b) 2/3+5/7=14/21+15/21=29/21=1 8/21
c) 1 1/10+5 4/5=11/10+29/5=11/10+58/10=69/10=6 9/10
d)5/6+3 11/12=10/12+3 11/12=3 21/12
e)1/4+1/5+3/10=5/20+4/20+6/20=15/20
f) 5+7 8/9+4 1/2=5+7 16/18+4 9/18= 5+11 25/18=16 25/18
g)6/7-3/4=24/28-21/28=3/28
h) 12/13-2/5=60/65-26/65=34/65
i) 1 2/3-1/6=1 4/6-1/6=1 3/6
j) 2 1/2-1 3/4=2 2/4-1 3/4=1 6/4-1 3/4=3/4
k) 12 7/10-8 7/8= 12 28/40-8 35/40=11 68/40-8 35/40=3 33/40
l) 4 7/9 - 2 11/12=4 84/108-2 99/108=3 192/108-2 99/108=1 93/108
Pozdrawiam . ;)