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Efectuati ecuatia urmatoare: 2a+50=100

Răspuns :

2a=100-50
2a=50
a=50/2
a=25
verificare=2x25+50=100
   
[tex]2a+50=100 \\ 2a=100-50 \\ 2a=50 \\ a= \frac{50}{2} =\boxed{25} [/tex]