Question

R: 2
FACULTATIV
16. Despre trei numere naturale ştim că: I + II = 305; II + III = 224; I + III = 271.
a) Aflati suma celor 3 numere,
b) Aflaţi numerele.
suplement planten
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Answer 1

Răspuns:

I+II=305

II+III=224

I+III=271

Le adunam

a)

I+II+II+III+I+III=305+224+271

2×II+2×II+2×III=529+271

2×( I+II+III) = 800 |:2

I+II+III=800:2

I+II+III=400

b)

I+II+III=400

I+II=305

Le scadem

=> III=400-305

III=95

I+II+III=400

II+III=224

Le scadem

=> I=400-224

I=176

I+II+III=400

I+III=271

Le scadem

=> II=400-271

II=129

Sper ca te-am ajutat:)