问题
解答题
细心算一算,一定算对哟! (1)(1-1
(2)-25÷(-4)×(
|
答案
(1)原式=1×(-24)-1
×(-24)-1 2
×(-24)+3 8
×(-24)7 12
=-24+36+9-14
=-38+45
=7;
(2)原式=-32÷(-4)×
-12×(-15+16)31 4
=-32×(-
)×1 4
-12×131 4
=2-12
=-10.
细心算一算,一定算对哟! (1)(1-1
(2)-25÷(-4)×(
|
(1)原式=1×(-24)-1
×(-24)-1 2
×(-24)+3 8
×(-24)7 12
=-24+36+9-14
=-38+45
=7;
(2)原式=-32÷(-4)×
-12×(-15+16)31 4
=-32×(-
)×1 4
-12×131 4
=2-12
=-10.