x-(x÷2-40)-(x÷2÷2+40)=60
问题描述:
x-(x÷2-40)-(x÷2÷2+40)=60
答
x-x/2+40-x/4-40=60
(1-1/2-1/4)x=60
x/4=60
x=60÷1/4
x=240
答
等于两百四十,那位的回答是正解