Question

Помогите пожалуйста




-7/72-1/8=
-3/81-5/9=
2/8-47/90=
9/24-7/30=
-3/20-5/24=
-5/18+2/21=
3/11-(-5/14)=
7/8+(-20/8)=
-7/13+(-6/13)=
-5/9+6/9=​

Answer 1

$- \frac{7}{72} - \frac{1}{8} = - \frac{2}{9}$

$- \frac{3}{81} - \frac{5}{9} = - \frac{16}{27}$

$\frac{2}{8} - \frac{47}{90} = - \frac{49}{180}$

$\frac{9}{24} - \frac{7}{30} = \frac{17}{120}$

$- \frac{3}{20} - \frac{5}{24} = - \frac{43}{120}$

$- \frac{5}{18} + \frac{2}{21} = - \frac{26}{126}$

$\frac{3}{11} - ( - \frac{5}{14} ) = \frac{97}{154}$

$\frac{7}{8} + ( - \frac{20}{8} ) = - \frac{13}{8} = - 1 \frac{5}{8}$

$- \frac{7}{13} + ( - \frac{6}{13} ) = - 1$

$- \frac{5}{9} + \frac{6}{9} = \frac{1}{9}$