Question

If 3x+5y=9 and 5x+3y=7, then ,what is the value of x+y ?


2


16


9


7​

Answer 1

x+y = 1/2

Step-by-step explanation:

solve 2 eqn by eliminating method by multiplying eqn 1 by 5 and eqn 2 by 5 then find value of variable y and substitute value of y in eqn 1 and find value of x ...value of y comes out to be 3/2 and value of x comes out to be 1/2 thus the sum is 1/2

Answer 2

Answer:

x=(9-5y)/3

5×(9-5y)/3 + 3y=7

45-25y+3y=21

45-22y=21

22y= -24

y= -12/11