17-8÷(-2)+4(-5)=?2方×(5-7)÷(-2分之1)+3×(-2)方等于?
问题描述:
17-8÷(-2)+4(-5)=?2方×(5-7)÷(-2分之1)+3×(-2)方等于?
答
17-8÷(-2)+4(-5)=17-(-4)+(-20)=17+4-20=1
2方×(5-7)÷(-2分之1)+3×(-2)方=-8/(-1/2)+3*4=16+12=28