5/5 will be a whole, when it comes to 5ths, since she spent 2/5 of her money, 5/5 - 2/5, she has left 3/5 of the whole then.
then she spent 4/9 of her 3/5 leftover, how much is 4/9 of 3/5? well, is just their product,
Not sure what the question is but 3x + 7 is the algebraic expression that would represent this statement.
Answer:

Step-by-step explanation:
Consider triangle ABC with the base AC=36. Let the line DE be parallel to the line AC. If DE||AC, then triangles ABC and DBE are similar. If k is the scale factor of these triangles, then

Thus,

The area of the triangle ABC is

The area of the triangle DBE is

Since line DE divides triangle ABC in two equal area parts, we have that

and
