Bjr
P =
[tex] \frac{ - 9}{7} \times \frac{ - 28}{3} \div \frac{6}{15} [/tex]
P =
[tex] \frac{9}{7} \times \frac{28}{3} \div \frac{6}{15} [/tex]
P =
[tex] \frac{9}{7} \times \frac{28}{3} \times \frac{15}{6} [/tex]
P =
[tex] \frac{3}{7} \times 28 \times \frac{15}{6} [/tex]
P =
[tex]3 \times 4 \times \frac{5}{2} [/tex]
P =
[tex]3 \times 2 \times 5[/tex]
P =
[tex]30[/tex]
____________________
R =
[tex] \frac{ - 3}{25} + \frac{ - 24}{15} \div \frac{21}{ - 35} [/tex]
R =
[tex] \frac{ - 3}{25} + \frac{24}{15} \div \frac{21}{35} [/tex]
R =
[tex] \frac{ - 3}{25} + \frac{24}{15} \times \frac{35}{21} [/tex]
R =
[tex] \frac{ - 3}{25} + \frac{8}{5} \times \frac{35}{21} [/tex]
R =
[tex] \frac{ - 3}{25} + \frac{8}{5} \times \frac{5}{3} [/tex]
R =
[tex] \frac{ - 3}{25} + 8 \times \frac{1}{3} [/tex]
R =
[tex] \frac{ - 3}{25} + \frac{8}{3} [/tex]
R =
[tex] \frac{191}{75} [/tex]
R =
[tex]2.54[/tex]
____________________
S =
[tex] \frac{ - 2}{3} \times \frac{6}{8} - \frac{3}{4} \div \frac{1}{ - 2} [/tex]
S =
[tex] - \frac{2}{3} \times \frac{6}{8} - \frac{3}{4} \div \frac{1}{ - 2} [/tex]
S =
[tex] - \frac{2}{3} \times \frac{6}{8} + \frac{3}{4} \div \frac{1}{2} [/tex]
S =
[tex] - \frac{2}{3} \times \frac{6}{8} + \frac{3}{4} \times 2[/tex]
S =
[tex] - 2 \times \frac{2}{8 } + \frac{3}{4} \times 2[/tex]
S =
[tex] - \frac{2}{4} + \frac{3}{4} \times 2[/tex]
S =
[tex] - \frac{1}{2} + \frac{3}{4} \times 2[/tex]
S =
[tex] - \frac{1}{2} + \frac{3}{2} [/tex]
S =
[tex]1[/tex]
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