Odpowiedzi

2010-04-12T17:46:45+02:00
A)k=7n; n
k/7=n
b)a=k+6; k
a-6=k
c)z=7-y; y
7-z=y
d)d=a+bc; c
d-a/b=c
e)x=2k+1; k
x-1/2=k
f)2k=7n+5; n
2k-5/7=n
2010-04-12T17:53:26+02:00
A)k=7n /:7
k/7=n

b)a=k+6 /:6
a/6=k

c)z=7-y
y+z=7 /:z
y=7/:z

d)d=a+bc /: a+b
d/a+b=c

e)x=2k+1
x-1=2k /:2
x-1/2=k

f)2k=7n+5
2k-5=7n /:7
2k-5/7=n