x/(3/4+2/3) =8/17
17x = 8*(3/4+2/3) = 6 + 16/3 = (18+16)/3 =34/3
17x= 34/3
x=2/3x+4��֮1x=8��֮15 �鷳����x + x/4 = 15/85x/4 = 15/810x = 15x=3/2