Question

13. Calculati varoggg ex 13 pag 103 matematica
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Answer 1

Răspuns:

a)  ⁶ $\frac{2}{7}$⁻⁴$\frac{1}{7}$ = $\frac{6*7+2}{7}$⁻$\frac{4*7+1}{7}$=$\frac{44}{7}$⁻$\frac{29}{7}$=$\frac{15}{7}$

b) ¹²$\frac{1}{9}$⁻⁵$\frac{4}{9}$=$\frac{109}{9}$⁻$\frac{49}{9}$=$\frac{60}{9}$

c) ⁸$\frac{4}{5}$⁻³$\frac{1}{5}$=$\frac{44}{5}$⁻$\frac{16}{5}$=$\frac{28}{5}$

d) ¹⁸$\frac{2}{11}$⁻⁷$\frac{5}{11}$=$\frac{200}{11}$⁻$\frac{82}{11}$=$\frac{118}{11}$