Zabdenis987ask
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Afla nr. necunoscut .
a.538-x+821=1798
b.x+4281+3584=30000
c.2030+x-13521=8213

Răspuns :

Costache001ask

Răspuns:

538-x=1798-821

538-x=1477

x=1477-538

x=939

x+4281=30000-3584

x+4281=26416

x=26416-4281

x=22135

2030+x=8213+13521

2030+x=21734

x=21734-2030

x=19704

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