simplying and solving fractions with variables and no numbers

Question

Cant seem to figure this out! please help!

 

Solve for G: M=R+V/G

 

Solve for A: C=3A/(A-B)

 

 

Answer 1

M= R + V/G

subtract R from both sides

M-R = V/G

multiply both sides by G

G(M-R) = V

divide both sides by (M-R)

G = V/(M-R)