Distributive property states:
[tex]a(b+c)=ab+ac[/tex]so:
[tex]\begin{gathered} 6(n+4)=6n+6\cdot4=6n+24 \\ 15(2+1)=15\cdot2+15\cdot1=30+15=45 \\ 8(s+5)=8s+8\cdot5=8s+40 \\ 5(6+b)=5\cdot6+5b=30+5b \end{gathered}[/tex][tex]\begin{gathered} 9(3+v)=9\cdot3+9v=27+9v \\ 3(b+8)=3b+3\cdot8=3b+24 \\ 7(r+7)=7r+7\cdot7=7r+49 \\ 12(4+v)=12\cdot4+12v=48+12v \\ 11(3+5)=11\cdot3+11\cdot5=33+55=88 \end{gathered}[/tex]