Math do be kinda hard ✋

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

What are the values of each variable in the diagram below?

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation -1/2x+3=4-1/4x? a. -1/4x=1 b. -3/4x=1 c. 7=1/4x d. 7=3/4x