Question

51. (x + y) + z = x + (y + z)
a. True
b. False

Answer 1

true

Explanation:

so lets start with inserting some number in place of the letters

( 1 +2 ) + 3 = 1 + ( 2 + 3 )

3 + 3 = 1 + 5

6 = 6

so both side are equal that's means the equation is true