Answer: A.n = 4/7
have:

Step-by-step explanation:
So with this, you'll be using a proportion to solve it. And here's what your equation will look like:

Firstly, you'll need to cross-multiply. Your equation will look like this: 
For this, all you need to do is square root, and your answer is
, however this answer can be simplified further.

In short, your answer is 
Answer:
Step-by-step explanation:
you add 75 plus 30 which is 105 and subtract that by 140 which is 35
Answer:3x = -147 : x= -49
Hope I helped!..
Step-by-step explanation:
3x = -147
Divide both sides by 3
3x/3 = -147/3
Simplify:
X = -49