Մաթեմատիկա

1/5=2/10
1/2=5/10
3/12=15/60
6/14=12/28
12/25=48/100
7/8=49/56
11/18=22/36

1/12+3/4=10/12=5/6
15/20+1/4=15+5/20=20/20=1
3/22+7/11=3+14/22=17/22
1   10/21+4    3/7=5   10+9/21=5  19/21

31/36-1/4=31-9/36=22/36=11/18
18/24-1/4=18-6/24=12/24=1/2

48/100*25/4=12/4*1/1=3/1=3

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