X/(X+350)=20%
x+350=5x
5x-x=350
4x=350
x=87.5x+350=5x怎么做出来的X/(X+350)=20%X/(X+350)=1/5乘以5(x+350)得x+350=5xWho’s the one over there_________ the blue handbag?(in/with)