Question

Descoperiți numerele

$\frac{2}{5} + \frac{?}{5} = 1$
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Answer 1

Răspuns:

2/5+a/5=⁵⁾1

2+a=5

a=5-2

a=3

verificare:

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

Answer 2

$\frac{2}{5} + \frac{x}{5} = 1$

$\frac{2}{5} + \frac{x}{5} = \frac{5}{5}$

$\frac{x}{5} = \frac{5}{5} - \frac{2}{5}$

$\frac{x}{5} = \frac{3}{5}$

$x = \frac{3}{5} \times 5$

$x = 3$