3y + 2z = 12 Now you just try every answer until you get the right one. A) y=6 z=-3 3×6 + 2×(-3) =18 -6=12 This is CORRECT B) y=24 z=15 3×24 + 2×15= 72 + 30 =102 This is INCORRECT C) y=6 z=15 3×6 + 2×15=18+30=48 This is INCORRECT D)y=-6 z=15 3×(-6) + 2×15 = -18 + 30 = 12 This is CORRECT So the correct answers are A and D
