Ответ:
1) x=1,2*2,5
х=3
------------------------
3:1,2=2,5
2) х=1,8:1,5
х=1,2
1,8:1,2=1,5
3)х=11 3/7*1 1/20
х=12
12:11 3/7=1 1/20
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Ответ:
1) x=1,2*2,5
х=3
------------------------
3:1,2=2,5
2) х=1,8:1,5
х=1,2
------------------------
1,8:1,2=1,5
3)х=11 3/7*1 1/20
х=12
------------------------
12:11 3/7=1 1/20