SOLUTION: find two consecutive whole numbers such that the smaller number plus four times the larger number equals 39

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Question 669701: find two consecutive whole numbers such that the smaller number plus four times the larger number equals 39
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
Lets have one number be x and the next be x+1. Now we can set up an equation:
x+4(x+1)=39
Expand:
x+4x+4=39
Combine and subtract 4:
5x=35
Divide by 5:
x=7
Now we know the numbers are 7 & 8
Make sense?
RJ
www.math-unlock.com