QUESTION: Math problem: Solve -81 - 47 = -258*a + 1420 for a.
ANS: 6
QUESTION: Math problem: Solve 174*z - 1441*z = -175*z - 21840 for z.
ANS: 20
QUESTION: Math problem: Solve -30*k - 8160 = -155*k - 34*k - k for k.
ANS: 51
QUESTION: Math problem: Solve -476 + 476 = 6*a for a.
ANS:
0