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Alicanari
a fost răspuns

Afla numarul necunoscut

a)1250+a=3172

b)4200-x=2007

c)n-1980=2016


Răspuns :

a=3172-1250
a=1922

4200-2007=x
x=2193

n=2016+1980
n=3996
a)
1.250+a=3.172
a=3.172-1.250
a=1.922

b)
4.200-x=2.007
x=4.200-2.007
x=2.193

c)

n-1.980=2.016
n=1.980+2.016
n=3.996