Explicație pas cu pas:
Pentru a efectua aceste adunări,aducem la același numitor o fracție sau 2 fracții (unde e cazul),apoi efectuăm adunarea.
[tex]a) \: {}^{10)} \frac{1}{10} + \frac{3}{100} = \\ \frac{10}{100} + \frac{3}{100} = \frac{13}{100} \\ \\ b) \: \frac{3}{10} + {}^{5)} \frac{7}{2} = \\ \frac{3}{10} + \frac{35}{10} = \frac{38}{10} \\ \\ c) \: \frac{25}{100} + {}^{25)} \frac{1}{4} = \\ \frac{25}{100} + \frac{25}{100} = \frac{50}{100} \\ \\ d) \: \frac{3}{4} + {}^{2)} \frac{5}{2} = \\ \frac{3}{4} + \frac{10}{4} = \frac{13}{4} \\ \\ e) \: \frac{11}{14} + \frac{23}{14} = \frac{34}{14} \\ \\ f) \: {}^{2)} \frac{1}{8} + \frac{15}{16} = \\ \frac{2}{16} + \frac{15}{16} = \frac{17}{16} \\ \\ g) \: {}^{2)} \frac{3}{5 } + {}^{5)} \frac{1}{2} = \\ \frac{6}{10} + \frac{5}{10} = \frac{11}{10} \\ \\ h) \: 1 \frac{1}{7} + 1 \frac{2}{7} = \\ \frac{8}{7} + \frac{9}{7} = \frac{17}{7} [/tex]
Succes!
