Question

5. Solve the system of equations.
x + y = 6
2x - y = 9

Answer 1

first, solve for x
x + y = 6
+
2x - y = 9
——————
3x = 15
x = 5

then just substitute that into one of the equations

(5) + y = 6
y = 1

then make into an ordered pair (x,y)
(5, 1)