Answer:
2x-y=20 I hope this is right!
Explanation:
2*x
=2x
2*4
=8
y=2x-8(2)
y=2x-16-3
y=2x-20
20+y=2x
-y -y
20=2x-y
-y+4x=19
I think that's it but I'm not sure
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