Multiply the 2nd equation by -1 then add equations together -1(2x+y=11) -2x - y = -11 (Adding will eliminate the Y) 3x = 12 ------------------------------------ Divide each side by 3 3x ÷ 2 = 12 ÷ 3 x = 4 ================================================================== To find Y substitute 4 for x in 5x+y=23 (5)(4)+y=23 y+20=23 ----------------------------- Add -20 on each side y+20+-20=23+-20 y = 3
