SOLUTION: find three consecutive whole numbers such that twice the sum of the two smallest numbers is 10 more than three times the largest number

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Question 222441: find three consecutive whole numbers such that twice the sum of the two smallest numbers is 10 more than three times the largest number
Answer by drj(1380)   (Show Source): You can put this solution on YOUR website!
Find three consecutive whole numbers such that twice the sum of the two smallest numbers is 10 more than three times the largest number.

Step 1. Let n be an integer.

Step 2. Let n+1 and n+2 be the next two consecutive integers.

Step 3. Let n+n+1=2n+1 be the sum of the two smallest integers.

Step 4. Let 2(2n+1) be twice the sum of the two smallest integers.

Step 5. Let 3(n+2) be three times the largest number

Step 6. Then using Steps 3 and 4, 2(2n+1)=3(n+2)+10 since twice the sum of the two smallest numbers is 10 more than three times the largest number.

Step 7. Solving yields the following steps:

Solved by pluggable solver: EXPLAIN simplification of an expression
Your Result:


YOUR ANSWER


  • This is an equation! Solutions: n=14.
  • Graphical form: Equation was fully solved.
  • Text form: 2*(2n+1)=3*(n+2)+10 simplifies to 0=0
  • Cartoon (animation) form:
    For tutors: simplify_cartoon( 2*(2n+1)=3*(n+2)+10 )
  • If you have a website, here's a link to this solution.

DETAILED EXPLANATION


Look at .
Moved these terms to the left highlight_green%28+-3%2A%28n%2B2%29+%29,highlight_green%28+-10+%29
It becomes .

Look at .
Expanded term 2 by using associative property on %282%2An%2B1%29
It becomes .

Look at .
Multiplied numerator integers
It becomes .

Look at .
Multiplied numerator integers
It becomes .

Look at .
Added fractions or integers together
It becomes .

Look at .
Moved -8 to the right of expression
It becomes .

Look at .
Removed extra sign in front of -8
It becomes .

Look at .
Expanded term -3 by using associative property on %28n%2B2%29
It becomes .

Look at .
Multiplied numerator integers
It becomes .

Look at .
Added fractions or integers together
It becomes .

Look at .
Removed extra sign in front of -14
It becomes .

Look at .
Eliminated similar terms highlight_red%28+4%2An+%29,highlight_red%28+-3%2An+%29 replacing them with highlight_green%28+%284-3%29%2An+%29
It becomes .

Look at .
Remove extraneous '1' from product highlight_red%28+%284-3%29+%29
It becomes .

Look at .
Solved linear equation highlight_red%28+n-14=0+%29 equivalent to n-14 =0
It becomes .
Result:
This is an equation! Solutions: n=14.

Universal Simplifier and Solver


Done!



n=14, then n+1=15 and n+2=16

Check original equation or such that which is a true statement.

Step 8. ANSWER: The three consecutive integers are 14, 15, and 16.

I hope the above steps were helpful.

For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.

Good luck in your studies!

Respectfully,
Dr J


I hope the above steps were helpful.

For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.

Good luck in your studies!

Respectfully,
Dr J

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