(11/12-7/8+3/4-13/24)×(-4.8)
问题描述:
(
-11 12
+7 8
-3 4
)×(-4.8) 13 24
答
(
-11 12
+7 8
-3 4
)×(-4.8)13 24
=-4.4+4.2-3.6+2.6
=-1.2.