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When twice a number is subtracted from 29 the result is 21 find the number

User Andreas
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1 Answer

6 votes
x= a number

29 - 2x= 21
subtract 29 from both sides
-2x= -8
divide both sides by -2
x= 4

CHECK:
29 - 2x= 21
29 - 2(4)= 21
29 - 8= 21
21= 21

ANSWER: The number is 4.

Hope this helps! :)
User Daniele Armanasco
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