Eliza's backpack weighs 18 7 pounds with her math book in it. Without her math book, her backpack weighs 7 40:18 How much does Eliza's math book weigh?

4 7/72 ANSWER IS B

Step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

4

step-by-step explanation:

6 (donuts) divided by 3 is 2.

so 2/3 means 2 times 2, which is 4/6.

you get two and your friend gets four.