How could you use multiplication to find 7+7+7?

7+7+7 = 3 times 7

3x7=21 7x3=21

To use multiplication to find the sum of 7+7+7, you can simply multiply the number 7 by the count of the number of times it appears. In this case, since 7 appears three times, you can multiply 7 by 3.

Here's the step-by-step process to find the answer using multiplication:

1. Write down the number 7 three times: 7 + 7 + 7
2. Multiply the number 7 by the count of the repetition, which is 3: 7 x 3
3. Perform the multiplication: 7 x 3 = 21

So, using multiplication, you can find that 7 + 7 + 7 is equal to 21.