Question

If 7x+8y=23, 8x+7y=22 then what is the value of x+y?



Please say this answer. ​

Answer 1

Answer:

then x+y = 1

Step-by-step explanation:

8x+7y=22

7x+8y=23

(-) (-) (-)

x-y = -1

(-) x+y = -1

(then minus cancel)

i.e., x+y=1