Question

Hello ! Pls solve the above sum. Thank you. No spamming.​

Answer 1

Answer:

a) -105/16 = -6.56

b) -1/2 = -0.5

c ) 0

Step-by-step explanation:

a)

$\frac{7}{4} *(\frac{-8}{3} )+(\frac{7}{4} )*(\frac{-13}{12} )\\\\\frac{7}{1} *(\frac{-2}{3} )+(\frac{7}{4} )*(\frac{-13}{12} )\\\\(\frac{-14}{3}) +(\frac{-91}{48} )\\\\\frac{-14}{3} -\frac{91}{48} \\\\Taking LCM,\\\\\frac{16(-14)-1(91)}{48} \\\\\frac{-224-91}{48} \\\\\frac{-315}{48} \\\\\frac{-105}{16} \\\\-6.56$

b)

$\frac{2}{5} *(\frac{-3}{7} )-\frac{1}{14} -(\frac{3}{7} )*\frac{3}{5} \\\\\frac{-6}{35} -\frac{1}{14} -\frac{9}{35}\\\\Taking LCM, \\\\\frac{2(-6)-5(1)-2(9)}{70} \\\\\frac{-12-5-18}{70} \\\\\frac{-35}{70} \\\\\frac{-1}{2} \\\\-0.5$

c)

$\frac{-2}{7} *\frac{7}{9} +\frac{2}{7} -\frac{2}{7} *\frac{2}{9} \\\\\frac{-2}{1} *\frac{1}{9} +\frac{2}{7} -\frac{2}{7} *\frac{2}{9} \\\\\frac{-2}{9} +\frac{2}{7} -\frac{4}{63} \\\\Taking LCM,\\\\\frac{7(-2)+9(2)-1(4)}{63} \\\\\frac{-14+18-4}{63} \\\\\frac{-18+18}{63} \\\\\frac{0}{63} \\\\0$

Answer 2

$\huge\fbox\pink{✯Answer✯}$

$1) \frac{7}{4} \times \frac{ - 8}{4} + \frac{7}{4} \times \frac{ - 13}{12}$

$\frac{ - 14}{3} + \frac{7}{4} \times \frac{ - 13}{12}$

$\frac{ - 14}{3} - \frac{91}{48}$

$\huge\fbox\pink{✯Answer✯}$

$\frac{ - 105}{16}$

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$2) \frac{2}{5} \times \frac{ - 3}{7} - \frac{1}{14} - \frac{3}{7} \times \frac{3}{5}$

$\frac{ - 6}{35} - \frac{1}{14} - \frac{3}{7} \times \frac{3}{5}$

$\frac{ - 6}{35} - \frac{1}{14} - \frac{9}{35}$

$\huge\fbox\pink{✯Answer✯}$

$\frac{ - 1}{2}$

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$3) \frac{ - 2}{7} \times \frac{1}{9} + \frac{2}{7} - \frac{2}{7} \times \frac{2}{9}$

$\frac{ - 2}{63} + \frac{2}{7} - \frac{2}{7} \times \frac{2}{9}$

$\frac{ - 2}{63} + \frac{2}{7} - \frac{4}{63}$

$\huge\fbox\pink{✯Answer✯}$

$\frac{4}{21}$