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(p-933:3+300)×2=978

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Răspuns :

(p-933:3+300)×2=978
p-311+300=978:2
p-311+300=489
p-311=489-300
p-311=189
p=311+189
p=500
(p-933:3+300)×2=978
(p-311+300)×2=978
(B+300)×2=978
A×2=978
A=978:2
A=489
B+300=489
B=489-300
B=189
p-311=189
p=189+311
p=500