1+2=3
1+3=4
1+4=5
1
3
-[1-(
1
3
+
1
4
+
1
5
)]
=
1
3
-[1-
47
60
]
=
1
3
-
13
60
=
7
60
14÷
7
60
=120(个)
120×
1
3
=40(个)
120×
1
4
=30(个)
120×
1
5
=24(个)
40-14=26(个)
答:甲生产40个零件,乙生产30个零件,丙生产24个零件,丁生产26个零件.