Question

x/2+y=0.8
7/x+14/y=10

Answer 1

According to question

x/2 + y = 0.8
7/x + 14/y = 10

x + 2 y = 1.6
1/x + 2/y = 5
y + 2x = 5 xy
thu
5xy = 1.6
putting     x= 1.6/5y
     1.6 + 10y^2 = 1.6y
       y(10y- 1.6) = -1.6
             y = 0