Problem: Math Problem
Solve 3*s - 5 - 7 = 0 for s.

A: 4

Problem: Math Problem
Solve -20*k + 12*k + 2 = -9*k for k.

A: -2

Problem: Math Problem
Solve 214*z + 305*z - 852 - 1776 - 2562 = 0 for z.

A:
10