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.
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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
and
-21-y=45
-21-45=y
-66=y.
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