Question:
Solve 65*j - 67*j = 0 for j..

Answer:
0

Question:
Solve 65*n - 50*n + 244 = -117*n - 152 for n..

Answer:
-3

Question:
Solve -4*r + 7 = 19 for r..

Answer:
-3

Question:
Solve -716*u + 4818 + 3058 = 0 for u..

Answer:
11