Hello,
[tex]A = \frac{4}{3} - ( \frac{1}{2} + \frac{7}{8} )[/tex]
[tex]A = \frac{4}{3} - ( \frac{1 \times 4}{2 \times4} + \frac{7}{8}) [/tex]
[tex]A = \frac{4}{3} - \frac{11}{8} [/tex]
[tex]A = \frac{4 \times8}{3 \times8} + \frac{11 \times3}{8 \times3}
[/tex]
[tex]A = \frac{32}{24} - \frac{33}{24} = \frac{-1}{24} [/tex]
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[tex]B = \frac{4}{3} - \frac{7}{5} - ( \frac{3}{5} - \frac{5}{7} )[/tex]
[tex]B =\frac{4 \times 35}{3 \times 35} - \frac{7\times 21}{5\times 21} - ( \frac{3\times 21}{5\times 21} - \frac{5\times 15}{7\times 15} )
[/tex]
[tex]B = \frac{140}{105} - \frac{147}{105} - ( \frac{63}{105} - \frac{75}{105})[/tex]
[tex]B = \frac{140}{105} - \frac{147}{105} + \frac{12}{105} [/tex]
[tex] B = \frac{-7}{105} + \frac{12}{105} [/tex]
[tex]B = \frac{5}{105} = \frac{1}{21} [/tex]
Bonne soirée,
Everteam.
