(2 1/4 - 1 1/4(2/7 + 3 1/7 * 1/3)) : 0,7

Question

(2 1/4 - 1 1/4(2/7 + 3 1/7 * 1/3)) : 0,7

---

Answer 1

3 1/7*1/3=22/7*1/3=22/21
2/7+22/21=6/21+22/21=28/21
1 1/4*28/21=5/4*28/21=35/21=1 14/21=1 2/3
2 1/4-1 2/3=1 5/4-1 2/3=1 15/12-1 8/12=7/12
7/12:0,7=7/12:7/10=7/12*10/7=5/6