SOLUTION: Two times the sum of a number and seven equals negative thirty

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Question 1102334: Two times the sum of a number and seven equals negative thirty

Found 4 solutions by josgarithmetic, Lightning_Fast, ikleyn, richwmiller:
Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
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two times the sum of a number and seven equals negative thirty
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Let the number be n.


"Sum of a number and seven"



"two times the sum of,..."



"..., equals negative thirty."


Put everything together exactly as the description was given.

Answer by Lightning_Fast(78)   (Show Source): You can put this solution on YOUR website!
The following is yielded when converted from English to Math:

{{2x + 14 = -30}}}


The number you are looking for is 8.

Answer by ikleyn(52792)   (Show Source): You can put this solution on YOUR website!
.
2*(x+7) = -30

2x + 14 = -30

2x = -30 - 14

2x = -44

x =  = -22.


Answer.  x = -22.

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The solution by @Lightning_Fast is  W R O N G.



Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
Two times the sum of a number and seven equals negative thirty
Lightning fast made an error in arithmetic and
and he forgot that the 30 is negative thirty
2x + 14 = -30
you need to subtract 14 from -30
2x=-30-14
2x=-44

josgarithmetic also forgot that the 30 is negative 30 in his explanation
He says
"..., equals thirty."
He corrected the oversight.

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