context: ###List of Questions
  (1) Let c = -2 - -7. Suppose c*z + 14 = 64. Let i = 14 - z. Solve -j = -i*j for j.
  (2) How many milligrams are there in 11/8 of a gram?
  (3) In base 7, what is -1 + 1?
  (4) Suppose -9*w = -107 - 415. Suppose -2*r - 35 = -155. Suppose -5*j = -2*j - r. Calculate the remainder when w is divided by j.
  (5) What is prob of picking 4 y when four letters picked without replacement from yyyyyyyymmmymm?
q_1: (1) Let c = -2 - -7. Suppose c*z + 14 = 64. Let i = 14 - z. Solve -j = -i*j for j.
q_2: (2) How many milligrams are there in 11/8 of a gram?
q_3: (3) In base 7, what is -1 + 1?
q_4: (4) Suppose -9*w = -107 - 415. Suppose -2*r - 35 = -155. Suppose -5*j = -2*j - r. Calculate the remainder when w is divided by j.
q_5: (5) What is prob of picking 4 y when four letters picked without replacement from yyyyyyyymmmymm?