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sa se afle termenul necunoscut ;
1+{2+3.[4+5.(6-x)/7}/8=2


Răspuns :

1+{2+3.[4+5.(6-x)/7}/8=2
{2+3.[4+5.(6-x)/7}/8=2-1
{2+3.[4+5.(6-x)/7}/8=1
2+3.[4+5.(6-x)/7=8
3.[4+5.(6-x)/7=8-2
3.[4+5.(6-x)/7=6
3.[4+5.(6-x)=42
4+5.(6-x)=14
5.(6-x)=14-4
5.(6-x)=10
6-x=2
x=4