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Vladnitorean1144w
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[tex] \frac{2}{5} + \frac{?}{5} = 1[/tex]
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Răspuns :

Dianageorgiana794

Răspuns:

2/5+a/5=⁵⁾1

2+a=5

a=5-2

a=3

verificare:

2/5+3/5=5/5=1

Kitty200704

[tex] \frac{2}{5} + \frac{x}{5} = 1[/tex]

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

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

[tex] \frac{x}{5} = \frac{3}{5}[/tex]

[tex]x = \frac{3}{5} \times 5[/tex]

[tex]x = 3[/tex]

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