(0,6+1/3)/(2-4 2/3)=
1. 3/5+1/3=3*3/15+5*1/15=9/15+5/15=14/15
2. 2-4 2/3= 1 3/3-4 2/3= 3 5/3-1 3/3=-2 2/3
3. 14/15/(- 2 2/3)= 14/15 *(-3/8)=7/20=0,35
Ответ у1=-6; х1=-1/3
у2=1;х2=2;
66/2²*6= 66/24 = 22/8= 11/4= 2,75
(x+6)^2=(15-x)^2
x+6=15-x
2x=9
x=9/2
x=4,5