Answer:
given equation,
3x+5y=9---------(1)
-3x+3y=15-------(2)
then,3x=9-5y-------(3)
3y=15+3x------(4)
now putting value of 3x on equation (4)
3y=15+9-5y
3y=24-5y
3y+5y=24
y=3
again, putting value of y on equ(3)
3x=9-5*3
3x=9-15
x=-2
correct answer is(-2,3)
