leahcasheba leahcasheba

31-01-2020
Mathematics

contestada

x+y=26
3x+8y=123
What is x equal

Respuesta :

Yang100 Yang100

02-02-2020

Answer:

x=17, y=9. (17, 9).

Step-by-step explanation:

x+y=26

3x+8y=123

------------------

x=26-y

3(26-y)+8y=123

78-3y+8y=123

78+5y=123

5y=123-78

5y=45

y=45/5

y=9

x=26-9=17

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