Question

Brian found 12-19 by breaking apart 19 into 12+7 write equations to show how Brian could have found the difference. ?

Answer 1

Answer is 12-19 = -7

Explanation:

12- 19 you can break 19 into 12 +7

then

it is easy to find 12-12 = 0

Now subtracts 0 - 7 =- 7

then

break 7 into 3 + 4

then

0 - 3 = -3

-3 - 4 = -7

So ,

12 - 19 = -7