Quiz (1 point)
Given that:
60 + (a ⋅ 2) = 180
not (2 = 0)
Prove that:
a = 60
The following properties may be helpful:
- 180 + (60 ⋅ (-1)) = 120
- 120 / 2 = 60
if a + b = c, then b = c + (a ⋅ (-1))
if the following are true:
- a = b
- b = c
then a = c
if the following are true:
- a ⋅ b = c
- not (b = 0)
then a = c / b
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.