Question

divide the sum of -13 by5 and 12 by 7 by product of -13 by 7 and - 1 by 2​

Answer 1

Answer:

$\frac{\frac{ - 13}{5} + \frac{12}{7} }{ \frac{ - 13}{7} \times \frac{ - 1}{2}} \\ = \frac{ \frac{ - 13(7)}{5(7)} + \frac{12(5)}{7(5)} }{ \frac{13}{14} } \\ = \frac{ \frac{ - 91}{35} + \frac{60}{35} }{ \frac{13}{14} } \\ = \frac{ \frac{ - 91 + 60}{35} }{ \frac{13}{14} } \\ = \frac{ \frac{ - 31}{35} }{ \frac{13}{14} } \\ = \frac{ - 31}{35} \div \frac{13}{14} \\ = \frac{ - 31}{35} \times \frac{14}{13} \\ = \frac{ - 31}{7(5)} \times \frac{7(2)}{13} \\ = \frac{ - 31}{5} \times \frac{2}{13} \\ = \frac{ - 61}{60}$

Answer 2

Step-by-step explanation:

(-13/5) + (12/7)

LCM =35

(-13/5)×7/7=(-91/35)

(12/7)×5/5=60/35

(-91+60)/35=(-31/35)

(-13/7)×(-1/2)

=13/14

(-31/35) ÷ (13/14)

=(-31/35) × 14/13

=-434/455