т Чевы
AM/MC *CL/LB *BK/KA =1
т Менелая
CL/LB *BK/KA *AE/EC =1
=> AE/EC =AM/MC => x/(x+3) =1/2 => x=3
т Чевы
AM/MC *CL/LB *BK/KA =1
т Менелая
CL/LB *BK/KA *AE/EC =1
=> AE/EC =AM/MC => x/(x+3) =1/2 => x=3