1.

If 3then what is the value of ​

Answer»

Answer:

3x+5y=9-----(1)

5x+3y=7-----(2)

multiplying eq(1) by 5 & eq(2) by 3 we get

15x+25y=45

-15x ± 9y= - 21

_____________

  16y=24

y = 24/16 = 3/2

and

x = 9-5x3/2/3 = -1/2

hence x = 1/2 and y = 3/2

so x + y = 1/2 + 3/2 = 2



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