问题
解答题
计算题 (1)-5÷(1
(2)-72+2×(-3)2-(-6)÷(-
|
答案
(1)-5÷(1
)×2 7
×(-24 5
)÷71 4
=5×
×7 9
×4 5
×9 4 1 7
=1;
(2)-72+2×(-3)2-(-6)÷(-
)21 3
=-49+2×9+6×9
=-49+18+54
=23.
计算题 (1)-5÷(1
(2)-72+2×(-3)2-(-6)÷(-
|
(1)-5÷(1
)×2 7
×(-24 5
)÷71 4
=5×
×7 9
×4 5
×9 4 1 7
=1;
(2)-72+2×(-3)2-(-6)÷(-
)21 3
=-49+2×9+6×9
=-49+18+54
=23.