Question

Daca x+2y +15=25 ,atunci calculează 2y +x +20

Answer 1

x+2y+15=25
x+2y=25-15=10
2y+x+20=25+(20-15)=30

Answer 2

$x+2y+15=25$
$x+2y=25-15$
$x+2y=10$

$2y+x+20=$
$25+(20-15)=$
$25+5=30$