chloe176
chloe176
29-01-2018
Mathematics
contestada
Please answer nehjdhdhe
Respuesta :
4805
4805
29-01-2018
Hello!!
We know y = 7 + x. Substitute this into our other equation,
2x = (x + 7) - 10
2x = x - 3
x = -3
Now, we know that x = -3 so, we can conclude that the answer is choice B.
Hope this helps!! Let me know if you have ANY questions.
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