Question

If 4x + 6y = 9 and 6x + 4y = 11 then what is the value of x+y ? *​

Answer 1

Answer:

⇒ x+y=2

Step-by-step explanation:

4x + 6y = 9-----------------(1)x6

6x + 4y = 11----------------(2)x4

 24x+36y=54

- 24x+16y=44

-------------------------       (subtract)

         20y=  10

   y=10/20

   ∴y=1/2  

put value of y in (1):

4x + 6*1/2= 9

4x+3*1=9

4x+3=9

4x=9-3

4x=6

x=6/4

∴x=3/2

x=3/2

y=1/2

x+y=3/2+1/2

x+y= 4/2

∴x+y=2