Question

6又2/3-5又2/3-5/7+17.75÷4等于多少？

Answer 1

解：6又2/3-5又2/3-5/7+17.75÷4等于（ 529/112 ），【即约等于4.72】
∵已知需求出6又2/3-5又2/3-5/7+17.75÷4等于多少
∴6又2/3 - 5又2/3 - 5/7 + 17.75 ÷ 4
= （6×3+2）/3 - （5×3+2）/3 - 5/7 + （17×100+75）/100 × 1/4
= 20/3 - 17/3 - 5/7 + 1775/100 × 1/4
= 3/3 - 5/7 + 71/4 × 1/4
= 1 - 5/7 + 71/16
= 7/7 - 5/7 + 71/16

= 2/7 + 71/16
= 32/112 + 497/112
= 529/112
= 4.72321428571
≈ 4.72
答：6又2/3-5又2/3-5/7+17.75÷4等于529/112，【即约等于4.72】

Answer 2

6又2/3-5又2/3-5/7+17.75÷4
=（6又2/3-5又2/3）-5/7+71/4÷4
=1-5/7+71/16
=2/7+71/16
=32/112+497/112
=529/112

Answer 3

6又2/3－5又2/3－5/7+17.75÷4
=1－5/7+17.75÷4
=2/7+17.75/4
=4又81/112