Răspuns :

Răspuns:

a)

[tex] \frac{7}{16} - \frac{5}{16} = \frac{2}{16} [/tex]

b)

[tex] \frac{11}{18} - \frac{5}{18} = \frac{6}{18} [/tex]

c)

[tex] \frac{19}{29} - \frac{7}{29} = \frac{12}{29} [/tex]

d)

[tex] \frac{10}{51} - \frac{8}{51} = \frac{2}{51} [/tex]

Răspuns:

[tex]\frac{7}{16} - \frac{5}{16} = \frac{7 - 5}{16} = \frac{2}{16}\\\\\frac{11}{18} - \frac{5}{18} = \frac{11 - 5}{18} = \frac{6}{18}\\\\\\\frac{19}{29} - \frac{7}{29} = \frac{19 - 7}{29} = \frac{12}{29}\\\\\\\frac{10}{51} - \frac{8}{51} = \frac{10 - 8}{51} = \frac{2}{51}[/tex]

[tex]\frac{2}{16} + \frac{5}{16} = \frac{7}{16}\\\\\\\frac{6}{18} + \frac{5}{18} = \frac{11}{18}\\\\\\\frac{12}{29} + \frac{7}{29} = \frac{19}{29}\\\\\\\frac{2}{51} + \frac{8}{51} = \frac{10}{51}[/tex]

Explicație pas cu pas:

La scădere de fracții cu același numitor doar scazi numărătorii.

La adunare de fracții cu același numitor doar aduni numărătorii