(1 1/5+2 3/10): 1 1/2= помогите решить_
(1 1/5 + 2 3/10): 1 1/2 = = (1 2/10 + 2 3/10) : 3/2 = = 3 5/10 * 2/3 = = 3 1/2 * 2/3= = 7/2 * 2/3 = = 7/3 = 2 1/3