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Mihaelamuraru59ionut
a fost răspuns

11-10:{7-6:[9-12:(3-2:x)]}=9 x. îmi dă 2 dar nu știu să le fac invers

Răspuns :

Robertinni
11-10:{7-6:[9-12:(3-2:x)]}=9
10:{7-6:[9-12:(3-2:x)]}=11-9=2
7-6:[9-12:(3-2:x)]=10:2=5
6:[9-12:(3-2:x)]=7-5=2
9-12:(3-2:x)=6:2=3
12:(3-2:x)=9-3=6
3-2:x=12:6=2
2:x=3-2=1
x=2·1=2

/robertinni