We're comparing 80,000 with 80.
One way to do this is divide the two numbers: 80,000/80 = 1000.
80,000 is one thousand times greater than 80.
Answer:
y = - 8
Step-by-step explanation:
y - 16 - 3y = 0
Group like terms
y - 3y - 16 = 0
Add similar elements: y - 3y = - 2y
- 2y - 16 = 0
Add 16 to both sides
- 2y - 16 + 16 = 0 + 16
Simplify
- 2y = 16
Divide both sides by - 2
= 
Simplify
: y

Apply the fraction rule: 
= 
Divide the numbers: 
= y
Simplify
: - 8

Apply the fraction rule: 

Divide the numbers:
= 8
= - 8
y = - 8
If 4/9 = 2/x then my guess is x=18
That is a fraction, if you want to put it into decimal form, it would be equivalent to 0.7