"why can a subtraction problem be rewritten as an addition problem without changing the outcome? " and include a real-world scenario where this might be modeled.

The perimiter of a rectangle is 70 inches the legneth of the rectangle is 5 less than 3 times the width of the rectangle what is the width of the rectangle

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?