问题
解答题
计算: (1)4
(2)(5
|
答案
(1)原式=4
+35
-25
+42 2
=7
+25
;2
(2)原式=5
-648÷3
+427÷3 15÷3
=5
-616
+49 5
=20-18+45
=2+4
.5
计算: (1)4
(2)(5
|
(1)原式=4
+35
-25
+42 2
=7
+25
;2
(2)原式=5
-648÷3
+427÷3 15÷3
=5
-616
+49 5
=20-18+45
=2+4
.5