Question

A book costs $3. Mr. Grayson spent $81 on books. The number of books, b, can be found by solving the equation 3b = 81. Which is the best method for solving the equation?

Answer 1

Answer: 3b = 81 (Diving three by both sides) will equal 27.

Step-by-step explanation: The guy above me is right, read before you give a one star lol.

Answer 2

Using division equality property to solve for b. b=27

Explanation:

A book cost $3

Mr. Grayson spent $81 on books

Let number of books be b

Total cost invest on book = 3b

This would be equal to $81

Therefore, 3b=81

Now we solve for b

Using division method of equality

If we divide both side by same number in equality.After division we get both are equal .

3b=81

Here we divide by 3 both sides

3b÷3=81÷3

b=27

Thus, Using division equality property to solve for b. b=27