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12-03-2021
Mathematics

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−9x−6y=15
9x−10y=145

y=
x=

Respuesta :

12-03-2021

Answer:

Step-by-step explanation:

Adding the two equations together gives you

9x-10y-9x-6y=145+15

-16y=160

y=-10, using this value in 9x-10y=145 gives you

9x-10(-10)=145

9x+100=145

9x=45

x=5

So y=-10 and x=5

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