Quiz (1 point)
Given that:
a / b = c / d
not (b = 0)
not (d = 0)
Prove that:
d ⋅ a = b ⋅ c
The following properties may be helpful:
if a = b, then c ⋅ a = c ⋅ b
if not (b = 0), then (b ⋅ d) ⋅ (a / b) = d ⋅ a
if not (d = 0), then (b ⋅ d) ⋅ (c / d) = b ⋅ c
if the following are true:
- a = b
- a = c
- b = d
then c = d
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.