Question

*If 12x + 13y = 51 & 13x + 12y = 49 then x + y = ?*
​

Answer 1

See attachment below

Answer 2

Answer:

Step-by-step explanation:

12x + 13y =51 ---(1)

13x + 12y =49 ---(2)

(1) - (2)

y - x = 2 ---(3)

Also

156x + 169y = 663

156x + 144y = 588

  -          -          -

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

25y =  75

=> y = 3

=> x=1 ( from 3)

∴x + y = 4

Mark it as brainliest dear...