|-2-(-2)^3|+(-2)^5-[1又7/2÷(-2/9)]=|-2-(-8)|+(-32)-[-81/4]=6-32+81/4=23/4
|-2-(-2)^3|+(-2)^5-[1又7/2÷(-2/9)]=|-2-(-8)|+(-32)-[-81/4]=6-32+81/4=23/4=5.75