Answer:
Hello !
The solutions are: -8 , -4 , 6
Hope this helps !
3(1,000,000)=3,000,000
3(100,000)=300,000
2(100)=200
3,300,200
Answer:

Step-by-step explanation:
Let's use a start by using common denominators.
and 
Now, replace the original equation with the common denominators. 
Solve! 
Nickels = x
dimes = x + 4
quarters = x
Value of coins:
nickel = 5 cents
dime = 10 cents
quarter = 25 cents
5x + 10(x + 4) + 25x = 3.20
5x + 10x + 40 + 25x = 320
40x = 320 - 40
40x = 280
x = 280/40
x = 7
There are 7 quarters, 7 nickels and 11 dimes.
There are 3 because 12 divided by 4 is 3.