Answer:
Brackets are punctuation
marks used in pairs to set apart or interject text within other
text.
Does 12  8 + 3 mean
4 + 3 which is 7, or 12  11 which is 1 ?
To avoid such confusion brackets are used.
(12  8) + 3 means
4 + 3, which is 7; 12  (8 + 3) means 12  11 which is 1
The brackets show which numbers in a calculation are combined together.
For example, ((4 x 5)  9)  (3  2) = (20  9)  1
= 11  1 = 10
Brackets are used in algebra to group terms together.
