Answer:
The value of x if y is 5.8 is 1.0667 or if y is 3, then x is 2.
Solution:
As given in the problem,
[tex]3x+y=9[/tex] ---------- (i)
[tex]3.2+y=9[/tex]-------- (ii)
[tex]6+y=9[/tex]------------ (iii)
From (ii) we get,
[tex]y = 9-3.2 = 5.8[/tex]
From (iii) we get,
[tex]y = 9-6 = 3[/tex]
As we can see y have two values,
Suppose y= 5.8, then x will be [tex]3x+5.8=9 \Rightarrow x= \frac{9-5.8}{3} = 1.0667[/tex]
or if y is 3, then x will be [tex]3x+3=9 \Rightarrow x= \frac{9-3}{3} = 2[/tex]
Therefore, the value of x if y is 5.8 is 1.0667 or if y is 3, then x is 2.