I do belive that you r answer is, yes, in fact:
x = 53
And I know this because of this math:>
4(x-28)=100
then you multiply x and -28 by 4.
4x-112=100
then we do this:
4x-112=100
+112 +112
and finally, we get this
4x = 212
But wait! There's more~~
We then divide 112 by 4, getting us a FINAL answer... of.........................................
53!