Răspuns:
[tex] \frac{9}{10} - ( - \frac{4}{15} ) = [/tex]
[tex] = \frac{9}{10} + \frac{4}{15} = [/tex]
Inmultim prima fractie cu 3, iar a doua cu 2 =>
[tex] = \frac{27}{30} + \frac{8}{30} = [/tex]
[tex] = \frac{27 + 8}{30} = [/tex]
[tex] =\frac{35}{30} [/tex]
Simplificam fractia cu 5=>
[tex] = \frac{7}{6} = [/tex]
= 1,1(6)
