Question

Algrebra - Solve each equation or formula for the variable specified.

1.) 3ax-n/5=-4, solve for x
2.) by+2/3=c, solve for y
3.) c=3/4y+b, solve for y
4.) s=n/2(a+t), solve for a
5.) at+b=ar-c, solve for a

Or if you could answer one with an explanation that would also help, thanks