Three tables are placed side by side. one table is 4 feet 6 inches wide, another is 3 feet 9 inches wide, and the third is 4 feet 11 inches wide. how wide are they combined? write your answer in feet and inches. use a number less than 12 for inches.

true statements:

a) x + y = y + x   ⇒ commutative property of addition

b) (x * y) * z = x * (y * z) ⇒ associative property of multiplication

d) (x + y) + z = x + (y + z) ⇒ associative property of addition

false statements:

c) x - y = y - x   should be: x - y = - y + x

e) (x - y) - z = x - (y - z) should be: (x - y) - z = x - (y + z)

step-by-step explanation:

the correct answer is the second option