Задача 67013 1. 2 5/8 + 1 3/4 - 2(3 1/4 - 1 3/8)...

637b2730a2cb852e0e46f3a9

21.11.2022 10:23:10

1.

2 5/8 + 1 3/4 - 2(3 1/4 - 1 3/8)

5f3eaa23faf909182968dde0

21.11.2022 11:38:14

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1) 2 (5/8)+1 (3/4)=2 (5/8)+1 (6/8)=3 (11/8)=4 (3/8),
2) 3 (1/4)-1 (3/8)=3 (2/8)-1 (3/8)=2 (10/8)-1 (3/8)=1 (7/8),
3) 2*1 (7/8)=2*(15/8)=15/4=3 (3/4),
4) 4 (3/8)-3 (3/4)=3 (11/8)-3 (6/8)=5/8.