问题
解答题
计算下面各题,能简算的要简算. (
|
答案
(1)(
+7 12
-3 8
)÷5 6
,1 24
=(
+7 12
-3 8
)×24,5 6
=
×24+7 12
×24-3 8
×24,5 6
=14+9-20,
=23-20,
=3;
(2)
×3 8
-5 6
×1 3
,3 8
=
×(3 8
-5 6
),1 3
=
×3 8
,1 2
=
.3 16