Quiz (1 point)
Given that:
x = c + d
y = e + f
Prove that:
((a + b) + (c + d)) + (e + f) = ((a + b) + x) + y
The following properties may be helpful:
if a = b, then c + b = c + a
if a = b, then c + b = c + a
if the following are true:
- a = b + c
- b = d
then a = d + c
Please write your proof in the table below. Each row should contain one claim. The last claim is the statement that you are trying to prove.