I need help with this problem. I tried to solve but I failed each time

Question

Question:
bx+3/5=-6

Answer 1

bx+3/5=-6
bx = -6 3/5

Answer 2

Would that be zero?

Answer 3

No.

Answer 4

what do you mean????

Answer 5

you have two unknowns and a single equation

the values of the unknowns are interrelated

there is no unique solution