Выполните дейстия :
1)5/6×9 /15 -5/12 ×4/15;
2)7/18×)9/14 +1/3 ×6/7 ;
3)9/20×2/3+5/14 ×7/25 ;
4)3 целое 3/4×2/5 -3целое 6/25 ×5/27 ;
5)2 целое 2/5 ×5/6- 3/4 ×1целое 2/3 ;
6) 1целое17/28 ×14/9 +14/25 ×5/7 .
1)5/6×9 /15 -5/12 ×4/15;
2)7/18×)9/14 +1/3 ×6/7 ;
3)9/20×2/3+5/14 ×7/25 ;
4)3 целое 3/4×2/5 -3целое 6/25 ×5/27 ;
5)2 целое 2/5 ×5/6- 3/4 ×1целое 2/3 ;
6) 1целое17/28 ×14/9 +14/25 ×5/7 .
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