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n=k/7
b)a=k+6
k=a-6
c)z=7-y
z-7=-y/:( -1)
y= z-7/ -1
d)d=a+bc
d-a=bc/:b
c= d-a/b
e)x= 2k+1
x-1=2k/:2
k=x-1/2
d) 2k=7n+5
2k-5=7n/:7
n=2k-5/7
n= k:7
2. a=k+6 / -6
k=a-6
3. z=7-y / -7
-y=z-7 / : -1
y= -z+7 ( chyba )
4. d=a+bc / -a
d-a=bc / : b
c=d-a:b
5. x=2k+1/ -1
x-1= 2k/ :2
k=x-1:2
6. 2k=7n+5/ - 5
2k-5=7n / :7
n=2k-5 :7
Proszę Bardzo ; ))
n=k/7
b) a-6=k
k= a-6
c) z-7=-y / :(-1)
-z+7=y
d) d-a=bc /:b
d-a/b=c
e) -2k=1-x/:(-2)
k=-0.5 -0.5x
d) -7n=5-2k/:(-7)
n=-5-2k/7