Question

28 supra x =21 supra 7
va rog

Answer 1

$\frac{28}{x}= \frac{21}{7} \\ 21x=28*7 \\ x=(28*7):21 \\ x= \frac{28}{3}$

Answer 2

7×X = 21×7
7×X=147
X=147 :7
X=21

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