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  • -3(2a+3b-4d)=
    -6a-9b+12d
  • -2(3x-7y)=
    -6x+14y
  • 3,2(-5a)(-4)=
    64a
  • -4(-2x-3y)=
    8x+12y
  • -2,4(-2a+3b)=
    4,8a-7,2b
  • 2,5(-3a)(-2b)=
    15ab
  • -2(-3a+4c)=
    6a-8c
  • -3(4a+9b-3c)=
    -12a-27b+9c
  • -4(-3a+5b-7c)=
    12a-20b+28c
  • -3(-3a)(-6c)=
    -54ac
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