问题
解答题
(1)计算:4-5-(-6)-(-7); (2)计算:(-
|
答案
(1)4-5-(-6)-(-7)
=4-5+6+7
=12;
(2)(-
-3 4
+5 6
)×367 12
=36×(-
)+36×(-3 4
)+36×5 6 7 12
=-27+(-30)+21
=-36.
(1)计算:4-5-(-6)-(-7); (2)计算:(-
|
(1)4-5-(-6)-(-7)
=4-5+6+7
=12;
(2)(-
-3 4
+5 6
)×367 12
=36×(-
)+36×(-3 4
)+36×5 6 7 12
=-27+(-30)+21
=-36.