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what do i need to do if there's a problem like this:the greatest number is twice as large as the least number, and the middle number is three more than the least number, and the sum is 75?

 Sep 22, 2015
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The greatest number is twice as large as the least number, and the middle number is three more than the least number, and the sum is 75?

 

Let the the least number = x

The greatest number = 2x

The middle number = x + 3

 

And we have

 

x + [x + 3 ] + 2x = 75   simplify

 

4x + 3 =   75     subtract 3 from both sides

 

4x = 72    divide both sides by 4

 

x = 18   this is the least

 

2x = 2(18)  = 36    this is the greatest

 

x + 3  =  18 + 3 = 21    this is the middle

 

 

 

cool cool cool

 Sep 22, 2015

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