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If 7 is added to a number and the sum is doubled, the result is -2 less than the number. find the number?

If 7 is added to a number and the sum is doubled, the result is -2 less than the number. find the number?
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4 votes
If 7 is added to a number and the sum is doubled, the result is -2 less than the number. find the number?

asked
User MikingTheViking
by
7.4k points

1 Answer

1 vote
This can be represented by the equation:
(x+7)2=x-2.

All you have to do now is solve for x.
(x+7)2=x-2
2x+14=x-2
2x=x-16
2x-x=-16
x=-16

Therefore, the number is -16.
answered
User Adin
by
8.4k points
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