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afla valoarea necunoscutei 100-(66+3×9)+8×3=3×i+1

Răspuns :

100-(66+3×9)+8×3=3×i+1
 100-(66+18)+24=3×i+1
100-84+24=3×i+1
40=3×i+1
3×i=40-1
3×i=39
i=39:3
 i=13