Tolong dijawab plis tabel 1.4 no. 2dan3

2.b-c=6-(-3)=9
  ax(b-c)=-2x(6-(-3))=-2x(9)=-18
  axb=-2x6=-12
  axc=-2x-3=6
 (axb)+(axc)=-12+6=-6
3.b-c=-7-2=-9
ax(b-c)=3x(-7-2)=3x-9=-27
axb=3x-7=-21
axc=3x2=6
(axb)+(axc)=-21+6=-15