Multiply the first equation by -2.25 So you get -2.25x + -2.25y = -90
So now your equations are -2.25x + -2.25y = -90 2.25x +1.75y = 83.50 And add them together ------------------------------- -.5y = -6.5 ÷-.5 ÷-.5 ------------------------ y = 13 Now that you know y= 13 then u can plug it into any of the equations i use x + y = 40 since it's easier So plug in 13 for y You should get x + 13 = 40 -13 -13 --------------------- x = 27
