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k-7=n
b)a-6=k
c)y=7-z
d)(d-a)/b=c
e)(x-1)/2=k
f)(2k-5)/7=n
n=k÷7
b)a=k+6
k=a-6
c)z=7-y
-y=z-7 /÷(-1)
y=-z+7
d)d=a+bc
d-a=bc /÷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
a.) k=7n (n)
7n=k //:7
n=k/7
b.) a=k+6 (k)
-k=6-a //× (-1)
k= -6+a
c.) z=7-y (y)
y=7-z
d.) d=a+bc (c)
-bc=a-d //× (-1)
bc= -a+d //:b
c=-a+d/b
e.) x=2k+1 (k)
-2k=1-x //:(-2)
k= -½ + ½x
f.) 2k=7n+5 (n)
-7n=5-2k // (-7)
n= -5/7 + 2/7k