0.03+0.02x/0.03=0.4x+0.9/0.5-x-5/2
问题描述:
0.03+0.02x/0.03=0.4x+0.9/0.5-x-5/2
这个“/”是分数线的意思!
0.03+0.02x/0.03=0.4x+(0.9/0.5)-(x-5/2)
答
0.03+0.02x/0.03=0.4x+(0.9/0.5)-(x-5/2)
3/100+2x/3=2x/5+9/5-x+5/2
9+200x=120x+540-300x+750
380x=1281
x=1281/380
额.数也太恶心了吧