After her raise, shannon earned 3/4 more than she previously made. if shannon's weekly wages totaled $2100 after her raise, what was shannon's original weekly wage?

So $2100 = 1+3/4 of her original raise.

Remember that 1 = 4/4, so in total it is 7/4 of her original pay (4/4+3/4). Let's find out what 1/4 is equal to.

If $2100=7/4 then 1/4=$300. Therefore 4/4 (or 1, her original pay) is 4 times $300, which is $1200.