Question

If 8x+7y=35 and 7x+8y=25 then (×+y)

Answer 1

Answer

4

Step-by-step explanation:

8x   + 7y  = 35

7x   + 8y  = 25

----------------------

15x + 15y = 60

Now,

15(x+y)=60

divided by 15 on bs

x+y=4