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Lucyaneya
a fost răspuns

\frac{x-2}{4,5} =\frac{7,2}{1}

Răspuns :

[tex] \frac{x - 2}{4.5} = \frac{7.2}{1} [/tex]

[tex] \frac{x - 2}{ \frac{45}{10} } = \frac{ \frac{72}{10} }{1}[/tex]

[tex]x - 2 = \frac{45}{10} \times \frac{72}{10} [/tex]

[tex]x - 2 = \frac{9}{2} \times \frac{36}{5} [/tex]

[tex]x - 2 = 9 \times \frac{18}{5} [/tex]

[tex]x - 2 = \frac{9 \times 18}{5} [/tex]

[tex]x - 2 = \frac{162}{5} [/tex]

[tex]5(x - 2) = 162[/tex]

[tex]5x - 10 = 162[/tex]

[tex]5x = 162 + 10[/tex]

[tex]5x = 172[/tex]

[tex]x = \frac{172}{5} [/tex]

[tex]x = 34.4 [/tex]

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