(2
5
8 -
2
3 ×2
5
14 )÷[(3
1
12 +4.375)÷19
8
9 ],
=(
21
8 -
2
3 ×
33
14 )÷[(
37
12 +
35
8 )÷
179
9 ],
=(
21
8 -
11
7 )÷[
179
24 ×
9
179 ],
=
59
56 ÷
3
8 ,
=
59
56 ×
8
3 ,
=2
17
21 .
(2
5
8 -
2
3 ×2
5
14 )÷[(3
1
12 +4.375)÷19
8
9 ],
=(
21
8 -
2
3 ×
33
14 )÷[(
37
12 +
35
8 )÷
179
9 ],
=(
21
8 -
11
7 )÷[
179
24 ×
9
179 ],
=
59
56 ÷
3
8 ,
=
59
56 ×
8
3 ,
=2
17
21 .