PLEASE HELP! WILL GIVE BRAINLIST

m - 9 = -13 What does m equal?

-17 = x - 15 What does x equal?

-7 + m = 8 What does m equal?

-17x = -204 What does x equal?

m/4 = -13 a What does m equal?

-143 = -11x What does x equal?

-5 = a/18 What does a equal?

18 + m = 8 what does m equal?