A,C and D
Step-by-step explanation:
A: 3x2=6
  3x4X=12X
   6+12X
C: 5x1=5
  5x2X=10X
  5+10X+1+2X
  6+12X
D: 7x1=7
  7x2X=14X
   7+14X-2X-1
   6+14X-2X
i really dont know
step-by-step explanation: