Seudónimo Seudónimo

11-05-2022
Mathematics

contestada

I need help with number 4.
A explanation is needed also!
Thankyou
100 points!
Brainliest
5 stars ⭐️
And a thanks !

I need help with number 4 A explanation is needed also Thankyou 100 points Brainliest 5 stars And a thanks class=

Respuesta :

swagadamas swagadamas

11-05-2022

Answer: n=4 y=3

Step-by-step explanation:

3n - y = 9

2n + y = 11

n=4

3(4) - y = 9

12 - y = 9

y=3

Answer Link

Аноним Аноним

12-05-2022

3x-y=9-(1)
2x+y=11--(2)

Adding both

5x=20
x=4

And

Put in eq(1)

3(4)-y=9
12-y=9
y=3

Answer Link

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