(-1-1/17)²×17/18+(-99又2/3)×24
问题描述:
(-1-1/17)²×17/18+(-99又2/3)×24
-1-{(-3)³-[3+0.4×(-1又1/5)]÷(-2)}
半小时内求答案!蟹蟹哟...
答
(-1-1/17)²×17/18+(-99又2/3)×24
解,得:
==(18/17)*(18/17)*(17/18)-99*24-(2/3)*24
==(18/17)-2376-16
==(18/17)-2392
==--2390又16/17
-1-{(-3)³-[3+0.4×(-1又1/5)]÷(-2)}
解,得:
==-1-[-27-(-63/50)]
==-1-(-25又37/50)
==-1+25又37/50
==24又37/50