Answer :
[tex]\\ \sf\longmapsto 6w+3-(2w+3)[/tex]
[tex]\\ \sf\longmapsto 6w+3-2w-3[/tex]
[tex]\\ \sf\longmapsto 6w-2w+3-3[/tex]
[tex]\\ \sf\longmapsto 4w[/tex]
Your friend has sold 4w more coupons .
[tex]\\ \sf\longmapsto 6w+3-(2w+3)[/tex]
[tex]\\ \sf\longmapsto 6w+3-2w-3[/tex]
[tex]\\ \sf\longmapsto 6w-2w+3-3[/tex]
[tex]\\ \sf\longmapsto 4w[/tex]
Your friend has sold 4w more coupons .