ile to jest :
1. a+(a-b)
2. 2x-(x+4)
3. 7-(-x+6)
4. - (x+4)+(x-5)
5. 1-(t+p)-(t-2)
6. -(-y+2)+(-2y-4)
1. a+(a-b) = a +a - b = 2a - b
2. 2x-(x+4) = 2x - x - 4 = x - 4
3. 7-(-x+6) = 7 + x - 6 = 1 + x
4. - (x+4)+(x-5) = -x - 4 + x - 5 = - 9
5. 1-(t+p)-(t-2) = 1 - t - p - t + 2 = 3 - 2t - p
6. -(-y+2)+(-2y-4) = y - 2 - 2y - 4 = - y - 6
1. a+(a-b)=2a-b
2. 2x-(x+4)=x-4
3. 7-(-x+6)=1+x
4. - (x+4)+(x-5)=-x-4+x-5=-9
5. 1-(t+p)-(t-2)=1-t-p-t+2=3-2t-p
6. -(-y+2)+(-2y-4)=y-2-2y-4=-y-6
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1. a+(a-b) = a +a - b = 2a - b
2. 2x-(x+4) = 2x - x - 4 = x - 4
3. 7-(-x+6) = 7 + x - 6 = 1 + x
4. - (x+4)+(x-5) = -x - 4 + x - 5 = - 9
5. 1-(t+p)-(t-2) = 1 - t - p - t + 2 = 3 - 2t - p
6. -(-y+2)+(-2y-4) = y - 2 - 2y - 4 = - y - 6
1. a+(a-b)=2a-b
2. 2x-(x+4)=x-4
3. 7-(-x+6)=1+x
4. - (x+4)+(x-5)=-x-4+x-5=-9
5. 1-(t+p)-(t-2)=1-t-p-t+2=3-2t-p
6. -(-y+2)+(-2y-4)=y-2-2y-4=-y-6