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03-07-2021
Mathematics

contestada

Sumas y restas
W+y=9
3W-y=11

Respuesta :

Аноним Аноним

04-07-2021

Answer:

w = 5

y = 4

Step-by-step explanation:

w + y = 9

3w - y = 11 ( + )

________

4w + 0 = 20

4w = 20

w = 20 / 4

w = 5

Substitute w = 5 in eq. w + y = 9,

w + y = 9

5 + y = 9

y = 9 - 5

y = 4

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