Question 267612
Hello, 
Let's set it up this way and it might make more sense.
Let x be the smallest number. x+2 would be the next and x+4 is the largest number. 
OK so adding the smallest and largest would be x+(x+4), right?  It says twice the smallest so that would be:
2x+(x+4)=25 
Hint: the word "is" in math problems usually means "=". )
Got it?
RJ 
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www.math-unlock.com