suma a trei numere naturale este 70.sa se afle numerele stiind ca al doilea numar este de doua ori mai mare decat primul,iar al treilea numar este de patru ori mai mare decat primul

Răspunsul a fost dat de: USER7385
29 Agustus 2025 matematica 5 minute
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Clasă: Education Materie: matematica
suma a trei numere naturale este 70.sa se afle numerele stiind ca al doilea numar este de doua ori mai mare decat primul,iar al treilea numar este de patru ori mai mare decat primul
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Cel mai bun răspuns
(149)
a+b+c=70
a=b-2
b=4c    c=b/4
b-2+b+b/4=70
2b+b/4=72
8b+b=288
9b=288
b=32
a=32-2=30
c=32/4=8
Răspunsul a fost dat în data 29 Agustus 2025
(140)
a+b+c=70
b=2xa
c=4xa
inlocuim
a+2a+4a=70
7a=70
a=70:7
a=10
b=2x10=20
c=4x10=40
10+20+40=70
Răspunsul a fost dat în data 29 Agustus 2025

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