Question

solve the system by using elimination or elimination with multiplication.
x-y=3
x+y=7

Answer 1

x - y = 3 and x + y = 7

add these together to get, 2x=10, so x=5
plug this value into one of the 1st equations 5+y=7
y=7-5, y=2
(x,y)=(5, 2)

Answer 2

x =5 and y=2