A-B-C
A-(B-C)
dane są sumy algebraiczne:
A:3X-Y
B:X-1
C:-3x-Y
3x-y-(x-1)-(-3x-y)=3x-y-x+1+3x+y=5x+1
3x-y-{(x-1)-(-3x-y)}=3x-y-{x-1+3x+y}=3x-y-x+1-3x-y=1-x-2y
A-B-C=3x-y-x+1+3x+y=5x+1
A-(B-C)=3x-y-(x-1+3x+y)=3x-y-4x-y+1=-x-2y+1
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3x-y-(x-1)-(-3x-y)=3x-y-x+1+3x+y=5x+1
3x-y-{(x-1)-(-3x-y)}=3x-y-{x-1+3x+y}=3x-y-x+1-3x-y=1-x-2y
A:3X-Y
B:X-1
C:-3x-Y
A-B-C=3x-y-x+1+3x+y=5x+1
A-(B-C)=3x-y-(x-1+3x+y)=3x-y-4x-y+1=-x-2y+1