Question

1. If 3x+5y=9 and 5x+3y=7 then what is the value of x+y.​

Answer 1

Step-by-step explanation:

3x+5y=9

5x+3y=7

9x+15y=27

25x+15y=35

- - = -

-16x = -8

x= 1/2

3*1/2+5y=9

5y=9-3/2

5y= 15/2

y= 15/3/5

y== 25

x+y. = 25+1/2= 51/2

v

25.5. answer