a)
n=6a+3
n=8a+5
n=11a+8
n+3=6a+3+3=6(a+1)=M6
n+3=8a+5+3=8(a+1)=M8
n+3=11a+8+3=11(a+1)=M11
multiplu de 6,8 si 11=264
n+3=264
n=264-3=261
b)
n=6a+5
n=7a+6
n=8a+7
n=9a+8
n+1=6a+5+1=6(a+1)=M6
n+1=7a+6+1=7(a+1)=M7
n+1=8a+7+1=8(a+1)=M8
n+1=9a+8+1=9(a+1)=M9
multiplu de 6,7,8 si 9=504
n+1=504
n=504-1=503