Question

4£®¼ÆËãÏÂÃæ¸÷Ì⣮
$\frac{7}{2}$¡Á$\frac{5}{8}$-$\frac{3}{2}$¡Â$\frac{8}{5}$       
2014¡Á$\frac{2014}{2015}$=
£¨$\frac{2}{3}$+$\frac{4}{15}$¡Á$\frac{5}{6}$£©¡Â$\frac{20}{21}$   
$\frac{4}{5}$¡Â[£¨ $\frac{3}{5}$+$\frac{1}{2}$£©¡Á2]£®

Answer 1

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½â´ð ½â£º£¨1£©$\frac{7}{2}$¡Á$\frac{5}{8}$-$\frac{3}{2}$¡Â$\frac{8}{5}$
=$\frac{7}{2}$¡Á$\frac{5}{8}$$-\frac{3}{2}$¡Á$\frac{5}{8}$
=£¨$\frac{7}{2}$$-\frac{3}{2}$£©¡Á$\frac{5}{8}$
=2¡Á$\frac{5}{8}$
=$\frac{5}{4}$

£¨2£©2014¡Á$\frac{2014}{2015}$
=£¨2015-1£©¡Á$\frac{2014}{2015}$
=2015¡Á$\frac{2014}{2015}$-1¡Á$\frac{2014}{2015}$
=2014-$\frac{2014}{2015}$
=2013$\frac{1}{2015}$

£¨3£©£¨$\frac{2}{3}$+$\frac{4}{15}$¡Á$\frac{5}{6}$£©¡Â$\frac{20}{21}$
=£¨$\frac{2}{3}$+$\frac{2}{9}$£©¡Â$\frac{20}{21}$
=$\frac{8}{9}$¡Á$\frac{21}{20}$
=$\frac{14}{15}$

£¨4£©$\frac{4}{5}$¡Â[£¨ $\frac{3}{5}$+$\frac{1}{2}$£©¡Á2]
=$\frac{4}{5}$¡Â[$\frac{11}{10}$¡Á2]
=$\frac{4}{5}$$¡Â\frac{11}{5}$
=$\frac{4}{5}$¡Á$\frac{5}{11}$
=$\frac{4}{11}$

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