(7 5/14+2 9/14)-3 5/8=?

Question

(7 5/14+2 9/14)-3 5/8=?

Answer 1

(7 5/14+2 9/14)-3 5/8=6 3/8
1) 7 5/14+2 9/14= 103/14+37/14=(103+37)/14=140/14=10
2) 10-3 5/8=10-29/8=80/8-29/8=(80-29)/8=51/8=6 3/8

Answer 2

А) (7 5/14+2 9/14)- 3 5/8=
1) 7 5/14+ 2 9/14=9 14/14=10
2) 10 - 3 5/8= 10/1-29/8=80/8-29/8=51/8=6.375
Ответ 6.375