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Mathematics

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Solve the following problems. It may be helpful to set up an equation. The sum of two numbers is 13, the difference is 4. What are the numbers? pls help

Answer :

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Answer:

y = 4 1/2

x = 8 1/2

Step-by-step explanation:

x + y = 13

x - y = 4

substitution method: let x = 4+y

4+y + y = 13

2y = 9

y = 4 1/2

x = 8 1/2

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