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Nicolas132
a fost răspuns

aflati numarul natural n din egalitatile:
a)7+n=25
b)n-23=47
c)84=3n
d)n:31=2
e)4n+3=23
f)8n-9=111
g)83-3n=23
h)254:(n+1)=127
i) (4n-5):11=9
j)7x(n-5)=35
k)9x(n-3)=90
l)6x(n-2)+8=20

Răspuns :

ArianaAugustinOwl
a) 7+n=25
n=25-7
n=18

b)n-23=47
n=47+23
n=70

c)84=3n
n=84:3
n=28

d)n:31=2
n=31×2
n=62

e) 4n+3=23
4n=23-3
4n=20
n=20:4
n=5

f)8n-9=111
8n=111+9
8n=120
n=120:8
n=15





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