suma dintre jumătatea si sfertul unui numar este 140.care este numarul?

Răspunsul a fost dat de: USER6317
30 Agustus 2025 matematica 5 minute
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Clasă: Education Materie: matematica
suma dintre jumătatea si sfertul unui numar este 140.care este numarul?
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Cel mai bun răspuns
(95)
a:2 +a:4 =140
2a :8=140
2a=140×8
a=(140×8):2 calculeaza tu nr ca nu prea am timp
Răspunsul a fost dat în data 30 Agustus 2025
(285)
notam cu 4x-numarul
jumatate=2x
sfert=x
2x+x=140
3x=140
x=140:3
x=46 rest2 sau x=46 2/3
numarul este 4x=4×(46+2/3)=184+8/3=186 2/3

Probabil ca ai gresit ceva la cerinta. Ori nu este 140 (ci poate 150), ori nu e suma, ci diferenta....
Răspunsul a fost dat în data 30 Agustus 2025

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