5 1/14
Пошаговое объяснение:
(2,5-2 1/3)-(-5 1/7)+1 1/3÷(-5,6)=5 1/14
1. 2,5-2 1/3=2 1/2-2 1/3=2 3/6-2 2/6=1/6
2. 1/6 -(-5 1/7)=7/42 +5 6/42=5 13/42
3. 1 1/3÷(-5,6)=4/3 ÷(-28/5)=4/3 ·(-5/28)=-5/(3·7)=-5/21
4. 5 13/42-5/21=5 13/42-10/42=5 3/42=5 1/14
5 1/14
Пошаговое объяснение:
(2,5-2 1/3)-(-5 1/7)+1 1/3÷(-5,6)=5 1/14
1. 2,5-2 1/3=2 1/2-2 1/3=2 3/6-2 2/6=1/6
2. 1/6 -(-5 1/7)=7/42 +5 6/42=5 13/42
3. 1 1/3÷(-5,6)=4/3 ÷(-28/5)=4/3 ·(-5/28)=-5/(3·7)=-5/21
4. 5 13/42-5/21=5 13/42-10/42=5 3/42=5 1/14