Yes, my darling boy, I know that using 2(l+w) is the easiest way of finding perimeter. You are not wrong. You are, however, learning addition and subtraction of fractions. The textbook does not want you to write your equation with multiplication. You are not wrong, it just isn't how they want it done.
That sounds like I'm saying you're wrong in a round about way, but you aren't. It's just a step past what you're supposed to be learning in this chapter. It's just another way of doing it. I promise in real life you will use your original equation for perimeter.
I hate this.
That sounds like I'm saying you're wrong in a round about way, but you aren't. It's just a step past what you're supposed to be learning in this chapter. It's just another way of doing it. I promise in real life you will use your original equation for perimeter.
I hate this.