Question

7x-13=84, 13x-7y=30 then find x+y​

Answer 1

Answer:

-9

Step-by-step explanation:

7x-13y=84-----(1)

13x-7y=30-----(2)

Subtracting (2) from (1),

7x-13y=84

13x-7y=30

-    +     -

-6x-6y=54

6(-x-y)=54

x+y=-9

X+Y=-9

Answer 2

7X-13= 84

7X = 97

X = 97/7

X= 13.85

13(13.85) - 7y = 30

180.142 - 7y = 30

-7y = -150.142

7y = 150.142

y = 21.44

X+Y = 21.44 + 13.85

35.29 Ans