sa se efectueze va rog
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Explicație pas cu pas:
3)
1/6-2/3=3/18-12/18= -9/18=> -1/2
4)
4/20-10/20-5/20= -11/20
5)
6/12-8/12+9/12= 7/12
6)
5/5-4/5=1/5
7)
7/8-8/8= -1/8
8)
8/8-7/8=1/8
9)
1/2-4/2=-3/2
10)
1/10-100/10=-99/10
11)
1/100-10000/100=-9999/100