Question

if 5x + 4y =10 and 4x + 5y = 8, then what is the value of x + y ?​

Answer 1

Required Answer:-

Given:

• 5x + 4y = 10
• 4x + 5y = 8

To Find:

• x + y = ?

Solution:

We have,

➡ 5x + 4y = 10 . . . . (i)

➡ 4x + 5y = 8 . . . . . (ii)

Adding equations (i) and (ii), we get,

➡ 9x + 9y = 18

Taking 9 as common, we get,

➡ 9(x + y) = 18

➡ x + y = 2

★ Hence, the value of (x + y) is 2.

Answer:

• The value of (x + y) is 2.