х первой
(х-11,7)=2(y-7.5)
x+y=177
x-11.7=2y-15
x=177-y
177-y-11.7=2y-15
165.3=3y
y=55.1
x=177-55.1=116.9
х первой
(х-11,7)=2(y-7.5)
x+y=177
x-11.7=2y-15
x+y=177
x=177-y
177-y-11.7=2y-15
165.3=3y
y=55.1
x=177-55.1=116.9