billy marble Pt 1

so at school my class are doing problem solving and I am going to show you a problem and show you how I and my group did it

Billy has 56 marbles in his collection.
if he has 14 more catseyes than bullets, how many of each marble did he have?

Answer: 35 C  21 B

so we spilt 56 to 28      56
                                     ⬇️
                                   28 28
then we split 14    14      then we added and took 7 from each 28         28 C      28 B
                            ⬇️                                                                              ⬇️+7     ⬇️-7
                            7 7                                                                              35           21


more will come.....