Question

M/12=28 528/y=66 n-11/16=7

Answer 1

M=28•12
m=336
y=528:66
y=8
n-11=7•16
n-11=112
n=123

Answer 2

I'm sorry, but these equations are incomplete. Each of them contains only one variable, but there is not enough information to solve for that variable.

Can you please provide me with the full set of equations and the variables you are trying to solve for?