does any one hear know m=cab/a-b?

Question

Express b in terms of a,c and m??? please im desperate

Answer 1

m=cab/a-b

Multiply both sides with (a-b) you would get
ma-mb=cab
i.e. cab+mb=ma
b(ca+m)=ma
giving you b=ma/ca+m

Answer 2

b = m(a)/ ca