Question

13x+17y = 15
17x+13y = 45
x+y=?
answer with steps​

Answer 1

Answer:

30

Step-by-step explanation:

13x +17y = 15

+ 17x +13y = 45

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

20x + 20y = 60

20(x+y) = 60

X+y = 30

Answer 2

Answer:

30

13x + 17y = 15 .....1)

17x + 13y = 45........2)

adding both eqns.

30x + 30y = 60

30(x+y) = 60

x+y= 2