1 целая 4\7 +2 целых 1\21= 5целых 1\4+3 8\11=

Question

1 целая 4\7 +2 целых 1\21= 5целых 1\4+3 8\11=

Answer 1

1) 1 ( 4/7 ) + 2 ( 1/21 ) = 1 ( 12/21 ) + 2 ( 1/21 ) = 3 ( 14/21 ) = 3 ( 2/3 ) ;
2) 5 ( 1/4 ) + 3 ( 8/11 ) = 5 ( 11/44 ) + 3 ( 32/44 ) = 8 ( 44/44 ) = 9

Answer 2

1 4/7+ 2 1/21=11/7+43/21=11+43/7+21=54/28=1 26/28