1. 0,6 ÷ 2/9= 6/10 ÷2/9= 3/5 ÷2/9=3/5+9/2=27/17=2 7/10
2.4/7 ÷ 1 3/4=4/7÷7/4=4/7×4/7=14/49
3.1 2/5 ÷10,5=7/5÷10 1/2=7/5÷21/2=7/5×2/21=2/15
Ответ: 1-А, 2-В, 3-Б.
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Answers & Comments
1. 0,6 ÷ 2/9= 6/10 ÷2/9= 3/5 ÷2/9=3/5+9/2=27/17=2 7/10
2.4/7 ÷ 1 3/4=4/7÷7/4=4/7×4/7=14/49
3.1 2/5 ÷10,5=7/5÷10 1/2=7/5÷21/2=7/5×2/21=2/15
Ответ: 1-А, 2-В, 3-Б.