Окружность.?Ладно.Под номером 3.
Z = K+3
2Z = 5K
2Z = 5(Z-3) = 5Z-15, Z=5
K=5+3=8
32х+ 14х- 27х + 5 = 100 19х+5=10019х=100-519х=95 х=95/19 х=5 ( 17х - 8х + 3) : 7=112 17х-8х+3=112*79х+3=7849х=784-39х=781х=781/9<span>х=86 7/9</span>
11х^2=44
х^2=44÷11
х^2=4
х=+2;-2
ответ:-2