Raspuns:
[tex]2)1 \frac{1}{3} = \frac{1 \times 3 + 1}{3} = \frac{4}{3} = \frac{7}{3} - \frac{4}{3} = \frac{3}{3} (nr \: cautat)[/tex]
[tex] 3)\frac{3}{4} x = 6 = \frac{4}{3} \times \frac{3}{4} x = \frac{4}{3} \times 6 = x = 4 \times 2 = 8[/tex]
[tex]1) \frac{1}{7} (x - 2.3) = \frac{5}{14} = x - 2.3 = \frac{5}{2} = x = \frac{5}{2} + 2.3 = x = \frac{24}{5} = 4.8[/tex]
[tex]2)2.(3) = \frac{23 - 2}{9} = \frac{21}{9} = \frac{7}{3} = \frac{7}{3} + \frac{5}{3} = \frac{7 + 5}{3} = \frac{12}{3} = 4[/tex] 5/3 este numarul
Explicație pas cu pas:
