Question

How do i find associative law of addition to write an equivalent expression for (x+3a)+y

Answer 1

The associative law allows us to rearrange parenthesis to regroup terms when adding or multiplying.


So in this case, saying

(x+3a)+y

is the same as saying

x+(3a+y)

using the associative law of addition


This is because adding in any order gives you the same result.

Answer 2

Ex:

(1+2)+3

is the same as

1+(2+3)


since (1+2)+3 --> 3+3 = 6 and 1+(2+3) --> 1+5 = 6