Question

Aflatil pe "n" din relatiile:
a) a:(18:n-1)=a
b) p:(9-n:8)=p
c) v:(7×7-n×6)=v

Answer 1

a) a:(18:n-1)=a
(18/n-1)=a:a
18/n-1=1
18/n=1+1
18/n=2
2n=18
n=18/2
n=9

b) p:(9-n:8)=p
9-n/9=p:p
9-n/9=1
-n/9=1-9
-n/9=-8     ·(-1)
n=9x8
n=72

c) v:(7×7-n×6)=v
49-6n=v:v
49-6v=1
-6v=1-49
-6v=-48    ·(-1)
v=48/6
v=8