1/3,1/2,3/5,2/3,5/7,(3/4)1/3=1/31/2=2/43/5=3/52/3=4/65/7=5/76/8=3/48,10,14,18,(22) 10=8+2*114=8+2*318=8+2*522=8+2*718,-27,36,(-45),54 18= 9*2-27=-9*336= 9*4-45=-9*554= 9*6