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16-05-2020
Mathematics

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The sum of two numbers is 13, the difference is 4. What are the numbers?.

Respuesta :

hoanganh384628 hoanganh384628

16-05-2020

Answer:

a = 8.5

b = 4.5

Step-by-step explanation:

let 2 number be a ,b

a + b = 13 (1)

a - b = 4 (2)

(1) + (2) = 2a = 13+4 = 17 -> a = 8.5

-> b = 8.5 -4 = 4.5

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