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Dacă 5/7=x/21,atunci x=A)15 B)1/15 C)5/7 D)7/5 plzzz repede urrggeennnntttttt​

Răspuns :

Răspuns:

x = 15

Explicație pas cu pas:

[tex] \\ \it \frac{5}{7} = \frac{x}{21} \\ \\ \it x = \frac{21 \times 5}{7} \\ \\ \it x = \frac{105}{7} \\ \\ \it \boxed{\bold{ x = 15}} [/tex]

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5/7 = x/21

x=5×21:7=105:7=15

x=15