Question 363851
Let J = score of Julius
    W = score of Wilt
    K = score of Karem

1st Equation
    J = K - 5
2nd Equation
    W = 2K + 1

3rd Equation
    W = J + 20

Subtract 2nd Equation by 3rd Equation

    0 = 2K + 1 - J - 20

Since J = K -5 in Equation 1

    0 = 2K + 1 -(K-5) -20

    0 = 2k + 1 - K + 5 -20
    K = 14

    W = 2(14) + 1
      = 29

    J = W-20
      = 29 -20
      = 9