I have no idea how to do any of these so please explain I'm already struggling and school just started

1.
[tex]5g + h = g[/tex]
solve for g
2.
[tex]y = mx + b[/tex]
solve for m

3.
[tex]3y + z = am - 4y[/tex]
solve for y

4.
[tex]km + 5x = 6y[/tex]
solve for m

5.
[tex] \frac{3ax - n}{5} = - 4[/tex]
solve for x

6.
[tex] \frac{by + 2}{3} = c[/tex]
solve for y

7.
[tex]at + b = ar - c[/tex]
solve for a