Question

If5x+4y=17and4x+5y=19,then what is the value of x+y?​

Answer 1

Step-by-step explanation:

x=17/9 y=17/9.

x+y is 34/9

Answer 2

Step-by-step explanation:

Given:-

5x+4y=17 and 4x+5y=19

To find:-

Find the value of x+y?

Solution:-

Given equations are

5x+4y=17----------(1)

and

4x+5y=19-------(2)

On adding (1)&(2)

5x+4y=17

4x+5y=19

(+)

_________

9x+9y = 36

_________

=>9x+9y = 36

=>9(x+y)=36

=>x+y = 36/9

x+y = 4

Answer:-

The value of x+y for the given problem is 4