(-53)-(-21)-(-79)等于?(3-5)-(6-10)等于?0-(正二分之一)-(正五分之二)等于?
问题描述:
(-53)-(-21)-(-79)等于?(3-5)-(6-10)等于?0-(正二分之一)-(正五分之二)等于?
答
(-53)-(-21)-(-79)
=-53+(21+79)=100-53=47
(3-5)-(6-10)
=-2+4
=2
0-(正二分之一)-(正五分之二)
=-1/2-2/5
=-5/10-4/10
=-9/10