Question

if 18x + 17y = 21 and 17x + 15y = 11 then find the value of x + y

Answer 1

Answer:

Step-by-step explanation:

15X +17Y=21

17X +15Y =11

Subtracting both equations we get

-2X + 2Y = 10

Taking 2 as a common factor

-X +Y = 5