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Can someone please help me with this problem? 

Help is greatly appreciated. 

Find \(a+b+c\) given that \(x+y\neq-1 \) and \(\begin{align*} ax+by+c&=x+7,\\ a+bx+cy&=2x+6y,\\ ay+b+cx&=4x+y. \end{align*}\)

 Nov 25, 2021
 #1
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$a + b + c = 5$

 Nov 25, 2021
 #2
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How do you know 

Jxalskdfjarkfhqwio3r  Nov 25, 2021
 #3
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Because that's how I did the problem.

Guest Nov 25, 2021
 #4
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Like so:

 

 Nov 25, 2021

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