问题
解答题
计算: (1)(-1
(2)-|-5|+(-3)3÷(-22); (3)-3
|
答案
(1)原式=-
-7 4
+19 3
=-10 3
-(7 4
-19 3
)=-10 3
-7 4
=-9 3
-21 12
=-436 12
;3 4
(2)原式=-5+(-27)÷(-4)=-5+
=-127 4
;3 4
(3)原式=-
×(-25 7
)×(-3 5
)=-10.14 3