SOLUTION: The difference of two numbers is 45. The second is 3 less than 3 times the first. What are the two numbers?? I really need someones help with this one.
Algebra ->
Test
-> SOLUTION: The difference of two numbers is 45. The second is 3 less than 3 times the first. What are the two numbers?? I really need someones help with this one.
Log On
Question 82871: The difference of two numbers is 45. The second is 3 less than 3 times the first. What are the two numbers?? I really need someones help with this one. Answer by afphrodietic(3) (Show Source):
You can put this solution on YOUR website! Let x = 1st number and y = 2nd number.
x-y=45
y=3x-3
plug in the second equation to the first.
therefore,
x-(3x-3)=45
x-3x+3=45
-2x+3=45
3=45+2x
3-45=2x
-42/2=x
-21=x
(