SOLUTION: Seven times the difference of 7 and a number gives 70. Find the number. A.)-3 B.)3 C.)21 D.)-21 I think the number is 21 but i'm not sure. I've tried writing it ou as

Question 158170: Seven times the difference of 7 and a number gives 70. Find the number.
A.)-3 B.)3 C.)21 D.)-21
I think the number is 21 but i'm not sure. I've tried writing it ou as
7(7)+x=70
What i'm having trouble with is what does the differenc eof seven mean?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
"Seven times the difference of 7 and a number gives 70" translates to

Start with the translated equation.

Distribute.

Subtract from both sides.

Combine like terms on the right side.

Divide both sides by to isolate .

Reduce.

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Answer:

So the answer is which means that the answer choice is A) -3
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