i forgot my homework and i literally have her class next i need help please and i need work to be shown. I'm sorry for my garbage hand writing.

1. 6 + 3 x B = -18
2. -3 + 5 x X = 12
3. 7 x n + 12 = -23
4. x/6 - 3 = 8
Im not the best with these kinds of problems but I tried mt best