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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+27)+24=3×i+1
100-93+24=3×i+1

7+24=3×i+1
31=3xi+1
31-1=3xi
30=3xi
30:3=i
10=i