问题
解答题
计算: (1)(-3)÷(-1
(2)(-
(3)[(-72)×(-
|
答案
(1)原式=3×
×7 3
×3 4
×67 3
=
;147 2
(2)原式=-(
×1 5
×25×10)1 10
=-5;
(3)原式=(72×
)×(2 3
×3 5
)15 8
=48×9 8
=54.
计算: (1)(-3)÷(-1
(2)(-
(3)[(-72)×(-
|
(1)原式=3×
×7 3
×3 4
×67 3
=
;147 2
(2)原式=-(
×1 5
×25×10)1 10
=-5;
(3)原式=(72×
)×(2 3
×3 5
)15 8
=48×9 8
=54.