cavanleahy cavanleahy

19-08-2022
Mathematics

contestada

3x + y = 7
1-2x - y = 9

Respuesta :

ouff2003 ouff2003

19-08-2022

Step-by-step explanation:

3x + y = 7 ------ A

1-2x -y = 9

2x + y = -8 ------ B

A-B : x = 15 ........

so , 2(15) + y = -8

30 + y = -8

Y = -38 .......

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