Question

Use the information to write an equation with variables on both sides. Let x represent Kim’s age.

Bob is 4 years older than twice Kim’s age.

Paul is 1 year younger than 3 times Kim's age.

Bob and Paul are the same age.

Which equation can be used to determine Kim’s age, x, from the information about Bob and Paul?
4x + 2 = 3x + 1
4x + 2 = 3x + (–1)
2x + 4 = 3x + 1
2x + 4 = 3x + (–1)

Answer 1

I'm stuck

Answer 2

okay, since bob and paul are the same age, lets just assign both to the variable y.
and K as the variable for kim
So we know that 2k+4 = y
and that 3k-1 = y
we can now use substitution, and say that 3k-1 = 2k+4
Now the problem uses x instead of k, so replace k with x, and you should get your answer :)