QUESTION: Math problem: Solve 0 = 11*k - 43 + 21 for k.
ANS: 2
QUESTION: Math problem: Solve -13329107*j + 399 = -13329126*j for j.
ANS: -21
QUESTION: Math problem: Solve 40*z = 37*z - 18*z - 105 for z.
ANS: -5
QUESTION: Math problem: Solve -293 = -87*j - 143 - 150 for j.
ANS:
0