3 Answers

7y - 4 > 24

You need to get the unknown on one side of the equation all by itself.  Do this by applying the OPPOSITE operation to the other values that are with the unknown.

In this case, you are subtracting 4 from 7y.  The opposite would be to ADD 4.  
7y -4 + 4 > 24 + 4   (You must add 4 to the other side of the equation, or the whole thing has changed.  Always do the same to both sides of the equation)

7y > 28.....I already know what the answer is, but let's do the whole thing.  You have 7y; you need 1y (aka "y").  Since you are Multiplying to get 7y, divide 7y by 7.  Don't forget to divide 28 by 7, too

7y/7  >  28/7

y > 4    (And this is true.  7(4) = 28, so y must be anything OVER 4) 

you cant because this is an unequal world.

7y-4>24    add 4 to -4 and 24

   +4  +4

 7y>28    divde 7y and 28 by 7 and you get

 y>4        thats how my math teacher showed my class