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ArtLuna
a fost răspuns

Verificati egalitatile
A) 18-4-2=18-(4+2)
b) 143-22-20-1= 143- (22+20+1)
C) 74 - 42 +12= 74 - (42-12)

Răspuns :

Irisukk
a) 18-4-2=18-(4+2)
12=18-4-2 => 12=12 Adv
b) 143-22-20-1=143-(22+20+1)
100=143-22-20-1
100=100 Adv
c) 74-42+12=74-(42-12)
74-42+12=74-42+12
44=44 Adv

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