Quiz (1 point)
Given that:
a / b = c / d
Prove that:
a ⋅ d = b ⋅ c
The following properties may be helpful:
- (b / c) ⋅ c = b
- ((a / b) ⋅ c) ⋅ b = a ⋅ c
- a ⋅ b = b ⋅ a
if a = b, then a ⋅ c = b ⋅ c
if the following are true:
- a = b
- a = c
then b = c
if a = b, then a ⋅ c = b ⋅ c
if the following are true:
- a = b
- b = c
then a = c
if the following are true:
- a = b
- b = c
then a = 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.