{
(x + y) * 2 = 40
x = y - 4.4
}
((y-4.4)+y) * 2 = 40
2y - 4.4 = 20
2y =24.4
y = 12.2дм
x = 12.2- 4.4 = 7.8дм
Ответ(7.8; 12.2)
1/3*6/1x-1/3/1/1-5/10+x/2=0