Răspuns:
sper ca te am ajutat!
Explicație pas cu pas:
1.
[tex] \frac{7}{10} - \frac{2}{10} = \frac{5}{10} [/tex]
2.
[tex] \frac{2}{4} + \frac{2}{4} = \frac{4}{4} [/tex]
3.
[tex] \frac{3}{10} + \frac{6}{10} - \frac{7}{10} = \frac{2}{10} [/tex]
4.
[tex] \frac{9}{10} - \frac{5}{10} = \frac{7}{10} - \frac{3}{10} [/tex]
5.
[tex] \frac{4}{9} + \frac{3}{9} = \frac{7}{9} [/tex]
6.
[tex] \frac{5}{3} - \frac{1}{3} = \frac{4}{3} [/tex]
7.
[tex] \frac{148}{100} - ( \frac{56}{100} + \frac{31}{100} ) = \frac{61}{100} [/tex]
8.
[tex] \frac{4}{4} + \frac{3}{4} + \frac{2}{4} = \frac{10}{4} - \frac{1}{4} [/tex]
