问题
解答题
计算.
860÷[(150+280)÷10]
721÷[210÷(750+25)].
答案
860÷[(150+280)÷10],
=860÷[430÷10],
=860÷43,
=20;
721÷[210÷(750+25)],
=721÷[210÷775],
=721÷
,210 775
=2660
.5 6
计算.
860÷[(150+280)÷10]
721÷[210÷(750+25)].
860÷[(150+280)÷10],
=860÷[430÷10],
=860÷43,
=20;
721÷[210÷(750+25)],
=721÷[210÷775],
=721÷
,210 775
=2660
.5 6