X=? daca media aritmetica dintre x si 81 este70

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29 Agustus 2025 matematica 5 minute
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Clasă: Education Materie: matematica
X=? daca media aritmetica dintre x si 81 este70
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Cel mai bun răspuns
(60)
M=(x+81)/2, 70=(x+81)/2, X+81=70*2, X+81=140, X=140-81, X=59
Răspunsul a fost dat în data 29 Agustus 2025
(140)
x + 81 supra 2 = 70
x + 81 = 70 * 2
x + 81 = 140
x = 140 - 81
x = 59

59 +81 supra 2 = 140 supra 2 = 70
Răspunsul a fost dat în data 29 Agustus 2025

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