Question

if 8x-7y is equal to 11 and 7x-8 y is equal to 4, then what is the value of x + y?

(A) 1 (B) 15 (C) 7 (D) 4​

Answer 1

Answer:

7

Step-by-step explanation:

8x-7y=11 -1st equation

7x-8y=4 -2nd equation

By elimination method:-

Subtract 2nd equation from 1st equation

8x-7y-(7x-8y)=11-4

8x-7y-7x+8y=7

x+y=7

Hence,option C is correct

Answer 2

Note: I know my answer is not in option.

But according to me it is correct.

So I think there's a mistake in question.