Odpowiedzi

2010-02-03T19:48:04+01:00
E.5a-(2-x)+b-2x+5=
= 5a-2+x+b-2x+5 =
= 5a+b-x+3
f.7k-(m-2n+k)-(5k-3)+(2k-1)=
=7k-m+2n-k-5k+3+2k-1=
= 3k-m+2n+2
g.0,3x-(5+0,7y)-(0.9-0,1x)+(x-0,1)=
= 0,3x-5-0,7y-0,9+0,1x+x-0,1 =
= 1,4x-6,7
h.0,5+(5-0,8b+2a)-(-b+1)=
= 0,5+5-0,8b-2a+b-1 =
= -2a+0,2b+4,5
i.¾-(¼x+½) =
= ¾-¼x-½ =
= -¼x+¾-2/4 =
= -¼x+¼
2010-02-03T19:49:55+01:00
E. 5a-x+b+3
f.3k-m+2n+2
g.1,2x-5,3
h.2a+0,2b+6,5
i.-1/4x+1 1/4