Answer :

We could use 7+7=14 to find the sum of 6+7.

Explanation:
7+7=14 is one of the two closest doubles to 6+7.
We know that:
7 is 1 more than 6; this means:
7+7 will be 1 more than 6+7.
7+7=14, so finding 1 less,
6+7=13.

Step-by-step explanation:

7 + 7 = 14

find the sum of 6 + 7

7 + 7 = 14 is one of the closest double to 6+7.

W.K.T(we know that)...

7 is 1 more than 6 this means ;

7 + 7 will be one more than 6 + 7

7 + 7 = 14 finding 1 Less

6 + 7 = 13

here is the answer hope It helped you