Answer:
1.) 22+(33+44)
2.) (5+3)+(1+9)
3.) (-a+d)+(-c+b)
Explanation:
Associative property of addition: Changing the grouping of addends does not change the sum. For example,
(2+3)+4= 2+(3+4)
No matter how you rearrange the numbers, they will always add to the same amount.