Question 784137
3x+5y=1
x=y+3

x is pretty much given to us, just plug it into the top system

y+3+y+3+y+3+5y=1

combine like terms

8y+9=1

subtract 9 from both sides

8y=-8

divide both sides by 8

y=-8/8

y=-1

now we have the value of y, plug that in and solve for x which will be x = 2

remember, your answer is going to be an ordered pair, (2,-1)