ПРОПОРЦИИ 6 класс 5 уравнений ×:1/3=3/4:1/2 . 5 2/3:у=1 1/27:1 7/9 . 15,48:64,8=55,9:×....

Question

ПРОПОРЦИИ 6 класс 5 уравнений
×:1/3=3/4:1/2 . 5 2/3:у=1 1/27:1 7/9 . 15,48:64,8=55,9:×. 4,5:3×=4:28 . 7,2:2,4=0,9:× .

Answer 1

х=(1/3*3/4)/(1/2)=(3/12)/(1/2)=3/12*2/1=6/12=1/2

у=(17/3*16/9)/(28/27)=272/27:28/27=272/27*27/28=272/28

х=(64,8*55,9)/15,48=234

3х=(4,5*28)/4=31,5 х=31,5/3=10,5

х=(2,4*0,9)/7,2=0,3