Verify the property: x × (y + z) = x × y + x × z by taking:
(i) $x=\frac{-3}{7}, y=\frac{12}{13}, z=\frac{-5}{6}$
(ii) $x=\frac{-12}{5}, y=\frac{-15}{4}, z=\frac{8}{3}$
(iii) $x=\frac{-8}{3}, y=\frac{5}{6}, z=\frac{-13}{12}$
(iv) $x=\frac{-3}{4}, y=\frac{-5}{2}, z=\frac{7}{6}$
We have to verify that $x \times(y+z)=x \times y+x \times z$.
(i) $x=\frac{-3}{7}, y=\frac{12}{13}, z=\frac{-5}{6}$
$\mathbf{x} \times(\mathbf{y}+\mathbf{z})=\frac{-3}{7} \times\left(\frac{12}{13}+\frac{-5}{6}\right)=\frac{-3}{7} \times \frac{72-65}{78}=\frac{-3}{7} \times \frac{7}{78}=\frac{-1}{26}$
$x \times y+x \times z=\frac{-3}{7} \times \frac{12}{13}+\frac{-3}{7} \times \frac{-5}{6}$
$=\frac{-36}{91}+\frac{5}{14}$
$=\frac{-36 \times 2+5 \times 13}{182}=\frac{-72+65}{182}$
$=\frac{-1}{26}$
$\therefore \frac{-3}{7} \times\left(\frac{12}{13}+\frac{-5}{6}\right)=\frac{-3}{7} \times \frac{12}{13}+\frac{-3}{7} \times \frac{-5}{6}$
Hence verified.
(ii) $x=\frac{-12}{5}, y=\frac{-15}{4}, z=\frac{8}{3}$
$x \times(y+z)=\frac{-12}{5} \times\left(\frac{-15}{4}+\frac{8}{3}\right)=\frac{-12}{5} \times \frac{-45+32}{12}=\frac{-12}{5} \times \frac{-13}{12}=\frac{13}{5}$
$x \times y+x \times z=\frac{-12}{5} \times \frac{-15}{4}+\frac{-12}{5} \times \frac{8}{3}$
$=\frac{9}{1}+\frac{-32}{5}$
$=\frac{45-32}{5}$
$=\frac{13}{5}$
$\therefore \frac{-12}{5} \times\left(\frac{-15}{4}+\frac{8}{3}\right)=\frac{-12}{5} \times \frac{-15}{4}+\frac{-12}{5} \times \frac{8}{3}$
Hence verified.
(iii) $x=\frac{-8}{3}, y=\frac{5}{6}, \mathrm{z}=\frac{-13}{12}$
$x \times(y+z)=\frac{-8}{3} \times\left(\frac{5}{6}+\frac{-13}{12}\right)=\frac{-8}{3} \times \frac{10-13}{12}=\frac{-8}{3} \times \frac{-3}{12}=\frac{2}{3}$
$x \times y+x \times z=\frac{-8}{3} \times \frac{5}{6}+\frac{-8}{3} \times \frac{-13}{12}$
$=\frac{-20}{9}+\frac{26}{9}$
$=\frac{-20+26}{9}$
$=\frac{2}{3}$
$\therefore \frac{-8}{3} \times\left(\frac{5}{6}+\frac{-13}{12}\right)=\frac{-8}{3} \times \frac{5}{6}+\frac{-8}{3} \times \frac{-13}{12}$
Hence verified.
(iv) $x=\frac{-3}{4}, y=\frac{-5}{2}, \mathrm{z}=\frac{7}{6}$
$x \times(y+z)=\frac{-3}{4} \times\left(\frac{-5}{2}+\frac{7}{6}\right)=\frac{-3}{4} \times \frac{-15+7}{6}=\frac{-3}{4} \times \frac{-8}{6}=1$
$x \times y+x \times z=\frac{-3}{4} \times \frac{-5}{2}+\frac{-3}{4} \times \frac{7}{6}$
$=\frac{15}{8}+\frac{-7}{8}$
$=\frac{15-7}{8}$
$=1$
$\therefore \frac{-3}{4} \times\left(\frac{-5}{2}+\frac{7}{6}\right)=\frac{-3}{4} \times \frac{-5}{2}+\frac{-3}{4} \times \frac{7}{6}$
Hence verified.