Q: Solve -11 + 3 = 4*p for p.

A: -2

Q: Solve -2*v - 15 + 7 = 0 for v.

A: -4

Q: Solve -13 - 10 = -11*r - 1 for r.

A: 2

Q: Solve -16*z - 131 = -339 for z.

A:
13