Ответ: 6
1) 4/9*7/3=28/27=1 1/27
2) 28/27*5/12=35/81
3) 7/9*3/27=7/81
4) 35/81*81/7=5/1=5
5) 5/1*6/5=6/1=6
(( 4/9: 3/7 × 5/12) : ( 7/9 × 3/27 )) × 1 1/5 = 6
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Ответ: 6
1) 4/9*7/3=28/27=1 1/27
2) 28/27*5/12=35/81
3) 7/9*3/27=7/81
4) 35/81*81/7=5/1=5
5) 5/1*6/5=6/1=6
(( 4/9: 3/7 × 5/12) : ( 7/9 × 3/27 )) × 1 1/5 = 6