Odpowiedzi

2010-02-03T15:03:45+01:00
A) a+(a-b)=2a-b
b) 2x-(x+4)=x-4
c) 7-(-x+6)=x+1
d) -(x+4)+(x-5)=-x-4+x-5=-9
e) 1-(t+p)-(t-2)=1-t-p-t+2=-2t-p+3
f) -(-y+2)+(-2y-4)=y-2-2y-4=-y-6
2010-02-03T15:06:45+01:00
A)
a+(a-b)=a+a-b=2a-b
b)
2x-(x+4)=2x-x-4=x-4
c)
7-(-x+6) =7+x-6=1+x
d)
-(x+4)+(x-5)=-x-4+x-5=-9
e)
1-(t+p)-(t-2)=1-t-p-t+2=3-2t+p
f)
-(-y+2)+(-2y-4)=y-2-2y-4=-y-6