Dacă a supra b = 2 supra 5 atunci 3a+2b supra
7a-2b este egal cu

Răspunsul a fost dat de: USER6473
26 Agustus 2025 matematica 5 minute
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Clasă: Education Materie: matematica
Dacă a supra b = 2 supra 5 atunci 3a+2b supra
7a-2b este egal cu
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4

Explicație pas cu pas:

a/b=2/5=k

a=2k

B=5k

3a+2b supra 7a-2b=16/4=4

Răspunsul a fost dat în data 26 Agustus 2025
(302)

Răspuns:

Explicație pas cu pas:

a/b = 2/5

a = 2b/5

3a + 2b = 3*2b/5 + 2b = 6b/5 + 10b/5 = 16b/5

7a - 2b = 7*2b/5 - 2b = 14b/5 - 10b/5 = 4b/5

(3a + 2b)/(7a - 2b) = (16b/5)/(4b/5) = 16b/5 : 4b/5 = 16b/5 x 5/4b = 16/4 = 4

Răspunsul a fost dat în data 26 Agustus 2025

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