24÷29/30×(7/8+13/4-11/12-1/2)
问题描述:
24÷
×(29 30
+17 8
-3 4
-11 12
) 1 2
答
24÷
×(29 30
+17 8
-3 4
-11 12
)1 2
=24÷
×(229 30
-5 8
-11 12
)1 2
=24÷
×(129 30
-17 24
)1 2
=24÷
×129 30
5 24
=24×
×30 29
29 24
=24×
×29 24
30 29
=29×
30 29
=30.