alexandra,andreea si adi au impreuna 1600lei.Calculti ce suma are fiecare daca andreea are cu 200 lei maui mult decat Adi,iar Alexandra are cat Andreea si Adi la un loc. VA ROOG AJUTATIMA!!
Răspunsuri la întrebare
Răspuns de
5
alexandra=a
adi=b
andreea=c
b+200=c
a=b+c
a+b+c=1600
b+c+b+c=1600
2b+2c=1600
2b+2(b+200)=1600
4b+400=1600
4b=1200
b=300
c=500
a=800
adi=b
andreea=c
b+200=c
a=b+c
a+b+c=1600
b+c+b+c=1600
2b+2c=1600
2b+2(b+200)=1600
4b+400=1600
4b=1200
b=300
c=500
a=800
Răspuns de
4
a= Alexandra
b= Adi
c= Andreea
a+b+c=1600
c=b+200
a=c+b⇒a=b+200+b
b+200+b+b+b+200=1600
4b+400=1600
4b=1600-400
4b=1200
b=1200:4=300
c=300+200=500
a=500+300=800
Verificare:
800+300+500=1100+500=1600 (Adevarat)
b= Adi
c= Andreea
a+b+c=1600
c=b+200
a=c+b⇒a=b+200+b
b+200+b+b+b+200=1600
4b+400=1600
4b=1600-400
4b=1200
b=1200:4=300
c=300+200=500
a=500+300=800
Verificare:
800+300+500=1100+500=1600 (Adevarat)
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