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10 pe 100 ori X egal 55

Răspuns :

   

[tex]\displaystyle\bf\\ \frac{10}{100}\cdot x=55\\\\ x=55: \frac{10}{100}=55\cdot  \frac{100}{10}=55\cdot10=\boxed{\bf550}[/tex]

10/100*x = 55

1/10*x = 55

x= 55 : 1/10

x= 55 * 10

x= 550