Question

How can you use the numbers 7, 7, 7, and 7, along with the operations of addition (+), subtraction (-), multiplication (x), and division (/), to make the expression equal to 56?

Answer 1

To achieve a result of 56 using four 7s, one could multiply three 7s to get 343, add the fourth 7 to get 350, and then divide by the last 7 to get 56.

Step-by-step explanation:

To make the expression equal to 56 using the numbers 7, 7, 7, and 7, along with the operations of addition, subtraction, multiplication, and division, one possible solution is to use the operations of multiplication and addition. We can multiply three of the sevens and then add the last seven to the product. The steps for this calculation are as follows:

1. Multiply three 7s: 7 x 7 x 7 = 343.
2. Add the last 7 to the result from step 1: 343 + 7 = 350.
3. Knowing that multiplication and division are inverse operations, we divide the result by the other 7 to get 56: 350 / 7 = 56.

This process demonstrates that by applying basic arithmetic rules and operation properties, we can arrive at the desired result.