问题
解答题
|
答案
(1)
÷(1-5 6
)×9 20
,5 9
=
÷5 6
×11 20
,5 9
=
×5 6
×20 11
,5 9
=
×50 33
,5 9
=
;250 297
(2)
×4 5
+80%×6 11
,5 11
=
×4 5
+6 11
×4 5
,5 11
=
×(4 5
+6 11
),5 11
=
×1,4 5
=
;4 5
(3)(
+16 19
)×24 17
+1 8
,17 19
=
×16 19
+1 8
×24 17
+1 8
,17 19
=
+2 19
+3 17
,17 19
=(
+2 19
)+17 19
,3 17
=1+
,3 17
=1
.3 17