问题
解答题
|
答案
(1)(520+138)÷(267-220)
=658÷47
=14;
(2)[86-(45+17)]×25
=[86-62]×25
=24×25
=600;
(3)156+18×42÷63
=156+756÷63
=156+12
=168.
|
(1)(520+138)÷(267-220)
=658÷47
=14;
(2)[86-(45+17)]×25
=[86-62]×25
=24×25
=600;
(3)156+18×42÷63
=156+756÷63
=156+12
=168.