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200g+320cg +a=2kg. Afla termenul necunoscut

Răspuns :

200g+320cg+a=2kg
200g+3200g+a=2kg
3400g+a=2kg
3400g+a=2000g
a=3400g-2000g
a=1400g
200g+320cg+a=2kg
(Transformam cg in g)
200g+3200g+a=2kg
3400g+a=2kg
(Transformam kg in g)
3400g+a=2000g
a=3400g-2000g
a=1400g
Sper ca te-am ajutat! :))