x+1.25x=9怎么解?
问题描述:
x+1.25x=9怎么解?
答
x+1.25x=9
2.25x=9
x=9/2.25=4
x+1.25x=9怎么解?
x+1.25x=9
2.25x=9
x=9/2.25=4