The commutatice property for addition says a+b=b+a
If it was for subtraction, then it would be a-b=b-a
Take a=7 and b=5
7-5 is not equal to 5-7
2 is not equal to -2
So subtraction is not commutative for whole numbers.
Hope this helps :)
She is saving $24!
explanation: multiply .2 (20%) by 120.
There are 3 more dots above the 13 than are above the 12, so the appropriate choice is ...
... A. 3
