Bonsoir,
[tex] \frac{4}{3} - ( \frac{1}{2} + \frac{7}{8} )[/tex]
[tex] = \frac{4}{3} - ( \frac{4}{8} + \frac{7}{8} )[/tex]
[tex] = \frac{4}{3} - \frac{11}{8} [/tex]
[tex] = \frac{4 \times 8}{3 \times 8} - \frac{11 \times 3}{8 \times 3} [/tex]
[tex] = \frac{32}{24} - \frac{33}{24} [/tex]
[tex] = - \frac{1}{24} [/tex]
[tex] \frac{4}{3} - \frac{7}{5} - ( \frac{3}{5} - \frac{5}{7} )[/tex]
[tex] = \frac{4 \times 5}{3 \times 5} - \frac{7 \times 3}{5 \times 3} - ( \frac{3 \times 7}{5 \times 7} - \frac{5 \times 5}{5 \times 7} )[/tex]
[tex] = \frac{20}{15} - \frac{21}{15} - ( \frac{21}{35} - \frac{25}{35} )[/tex]
[tex] = - \frac{1}{15} - ( - \frac{4}{35} )[/tex]
[tex] = - \frac{1}{15} + \frac{4}{35} [/tex]
[tex] = - \frac{1 \times 7}{15 \times 7} + \frac{4 \times 3}{35 \times 3} [/tex]
[tex] = - \frac{7}{105} + \frac{12}{105} [/tex]
[tex] = \frac{5}{105} [/tex]
[tex] = \frac{5 \div 5}{105 \div 5} [/tex]
[tex] = \frac{1}{21} [/tex]
