Gazeta Matematica

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Rezolvarea propusă:

9p+10g=82kg

9p+5g=77kg

9p=82kg-10g

(82kg-10g)+5g=77kg

82kg-10g+5g=77kg

5g=82kg-77kg

5g=5kg

g=5kg:5

5=1kg

9p+10g=82kg

9p=82kg-10kg

9p=72kg

p=72kg:9

9=8kg

 

 

R=1kg, 8kg


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