Question

5+5+7+700 because I'm not sure

Answer 1

717

Explanation:

5+5 = 10

10 + 7 = 17

700+17= 717

To do this, you need to add the 2 number just like 5+5.

after you got the result, add the another number in the digit like 10+7

now the first one is the last digit like 700 and add 17

700+17=717