Attempt following question by selecting a choice to answer.
D
What is the value of the expression
(a + b) + 2, if b + a = 2?f DA.
D6
B.
D4
C.
D2
D.
D2
D
B
Step 1: [Original expression.](a + b) + 2
Step 2: Changing the order of addends does not change the sum.[Commutative property of addition.]
Step 3: [Substitute a + b = b + a.]= (b + a) + 2
Step 4: [Substitute b + a = 2.]= 2 + 2
Step 5: [Add.]= 4