Помогите решить пропорции 1)x :3.8 = 4/5 :1.9 2) 2 1/3 : x = 3.5 : 1.5 помогите пжлст:3
1)x = 1.6 2)x = 1 Ответы.
1) 1.9Х = 3.8 * 4/5 1.9X = 3.8 * 0.8 X = ( 3.8 * 0.8 ) / 1.9 X =1.6 ================== 2) 3.5X = 2 1/3 * 1.5 3.5 X= 2 1/3 * 1.5 3.5 X = 7/3 * 3/2 3.5X = 7/2 3.5X = 3.5 X = 1