Ответ:
1) 3 ( 3/7 ) * 3,5 = ( 24/7 ) * ( 7/2 ) = 12 ( второе число )
2) 3 ( 3/7 ) + 12 = 15 ( 3/7 ) Ответ
3 3/7 - 2 1/3= 3 9/21 - 2 7/21 = 1 2/21
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Ответ:
1) 3 ( 3/7 ) * 3,5 = ( 24/7 ) * ( 7/2 ) = 12 ( второе число )
2) 3 ( 3/7 ) + 12 = 15 ( 3/7 ) Ответ
3 3/7 - 2 1/3= 3 9/21 - 2 7/21 = 1 2/21