Question

3x+y=9 3.2+y=9 6+y=9 what is the x

Answer 1

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,

$3x+y=9$ ---------- (i)

$3.2+y=9$-------- (ii)

$6+y=9$------------ (iii)

From (ii) we get,

$y = 9-3.2 = 5.8$

From (iii) we get,

$y = 9-6 = 3$

As we can see y have two values,

Suppose y= 5.8, then x will be $3x+5.8=9 \Rightarrow x= \frac{9-5.8}{3} = 1.0667$

or if y is 3, then x will be $3x+3=9 \Rightarrow x= \frac{9-3}{3} = 2$

Therefore, the value of x if y is 5.8 is 1.0667 or if y is 3, then x is 2.