(60-х) × 3 = 105 60 + Х × 3 = 105

(60-х) × 3 = 105 60 + Х × 3 = 105

  • 180-3х = 105
    180-105 = 3х
    75 = 3х
    х = 25
  • (60-х) * 3 = 105

    х = 60 (105/3)

    х = 25

    60 + х * 3 = 105

    х * 3 = 105-60

    х * 3 = 45

    х = 45/3

    х = 15