Question

If 13x+19y=90 and 19x+13y=70 then x+y=

Answer 1

here is the answer.

hope this helps.

Answer 2

Step-by-step explanation:

13x+19y= 90 ------------1

19x+13y=70--------------2

adding eqn 1 and 2

13x+19y +19x + 13y= 90+70

32x+32y= 160

32(X+y)= 160

x+y= 5. ( dividing by 32 on both side)

thus, x+y= 5

a bit different from how we usually solves it. please mark brainliest