a) 3+n-2+12=6+1+7
13+n=14
n=1
b)
27=
81=
= 1
3+4+n+5=15
12+n=15
n=3
c)
121=
3+2-n=8-5
5-n=3
n=2
d)
0,5=
=
n-2+5=4+2
n+3=6
e)
125=
25=
3+n-2-3=4+2
n-2=6
n=8
f)
16=
1+n+3-2-2=n+n
n=2n
n=0
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a) 3+n-2+12=6+1+7
13+n=14
n=1
b)
27=
81=
= 1
3+4+n+5=15
12+n=15
n=3
c)
121=
3+2-n=8-5
5-n=3
n=2
d)
0,5=
=
n-2+5=4+2
n+3=6
n=3
e)
125=
25=
3+n-2-3=4+2
n-2=6
n=8
f)
16=
1+n+3-2-2=n+n
n=2n
n=0