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matrenka [14]
3 years ago
5

Paul was thinking of a number. Paul adds 10, then divides by 2 to get an answer of -13. What was the original number?

Mathematics
1 answer:
ahrayia [7]3 years ago
6 0

Answer:

-36

Step-by-step explanation:

-13= n+10/2

-13×2=n+10

-26=n+10

-26-10=n

-36=n

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ikadub [295]

In order to solve this problem, we transform the statements into algebraic expressions. First, we assign the variables.

 

Let:

x = Gina’s number

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For the first equation, we show that Gina’s number is greater than Sara’s number by 2. For the second equation, we show that the sum of both numbers is 68.

<span>(1)  </span>x – y = 2

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