htulett15 htulett15
  • 23-12-2018
  • Mathematics
contestada

if the ratio of 7 less than a number and 7 more than the number 2, what is the number?

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Аноним Аноним
  • 23-12-2018

Answer:


Step-by-step explanation:

I assume you mean "if the ratio of 7 less than a number and 7 more than the number is 2".

Let x be the number.

Ratio is division.

(x-7)/(x+7)=2

Multiply by (x+7) on each side:

x-7=2(x+7) = 2x+14

Add 7 on each side

x=2x+21

Subtract 2

-x=21

x=-21

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