(-1.25)×(-2/5)×(+8)-9÷(-1 1/2)^2
问题描述:
(-1.25)×(-2/5)×(+8)-9÷(-1 1/2)^2
答
(-1.25)×(-2/5)×(+8)-9÷(-1 1/2)^2
=1.25*8*2/5-9/(-3/2)^2
=10*2/5-9/(9/4)
=4-4
=0