explain how to do the problem 3t=5/7?

divide by 3 on both sides

gives you:

3/3 * t = (5/7) / 3
or
t = 5/21

Remember you can do any operation to an equation as long as you do it on both sides.

t = 5/21-------------divide both sides by 3

lol that is hardly a problem. divide both sides by 3.

3t = 5/7
t = (5/7)/3
t = (5/7)(1/3)
t = 5/21