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if the sum of a number and nine is doubled, the result is seven less than the number. find the number.

User Kimberlee
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1 Answer

5 votes
x=the number we have to find.
This expression "2(x+9)" is when the sum of a number and nine is doubled.
If the result is seven less than the number, we will have: x-7

We can suggest the following equation:
2(x+9)=(x-7)
2x+18=x-7
2x-x=-7-18
x=-25

answer: the number would be: -25.
User Sunil Verma
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