Answer :

3x+5 =y

3= 2(3x+5) +x
3=6x+10+x
3=7x+10

-7=7x

x=-1 :))
[tex]3x+5=y\\ 3=2y+x\\\\ 3=2(3x+5)+x\\ 3=6x+10+x\\ 7x=-7\\ x=-1[/tex]

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