Question

2x+y para x=3 e y=-5

Answer 1

vamos substituir os valores
2.3 + (-5)
6 +(-5)
6 - 5
1

Answer 2

$Para~x=3~e~y=-5\\\\\\ 2x+y\to \\\\ 2*3+(-5)\to \\\\ 6-5\to \\\\ 1$