1,32 2,16, 4,8
That's all I got so it's 3
Sorry if I got it wrong or missed some
$87.5 because 30% of 125 is 37.5 so 125-37.5 is 87.5
Step-by-step explanation:

- In the line 2, only variables were operated with a reduction of similar terms in each side of the equation, giving as result -4x at one side, and 2x at the other side.
- In the line 3, terms with variables were joined together in one side of the equation, and then, they were operate it, given as result -6X.
Answer:
a. addition property of Equality