Question

Помогите пожалуйста ​

Answer 1

#91.

1) $frac{1}{5} = |frac{1}{5}| = |-frac{1}{5}|$

2) $789,7 = |789,7| = |-789,7|$

3) $x_1 = frac{5}{7} ; x_2 = - frac{5}{7}$

4) Нет корней

5) $x = 0$

6) $|-frac{1}{2} | - |frac{1}{4} | = frac{1}{2} - frac{1}{4} = frac{2}{4} - frac{1}{4} = frac{1}{4}$

7) $|3frac{1}{6} | * |-6| = 3frac{1}{6} * 6 = frac{19}{6} * 6 = 19$

8) $|-20| : |-frac{1}{4} | = 20 : frac{1}{4} = 20 * frac{4}{1} = 80$

9) $|5,067| + |-3,31| = 5,067 + 3,31 = 8,377$

10) $|-1frac{3}{8} | : |frac{1}{8}| = 1frac{3}{8} : frac{1}{8} = frac{11}{8} * frac{8}{1} = 11$

#92.

1) $frac{4}{5} = frac{24}{30} ; frac{5}{6} = frac{20}{30} ; frac{4}{5} > frac{5}{6}$

2) $5frac{1}{9} < 5frac{1}{8}$

3) $0,8 > 0,76$

4) $3,005 < 3,02$

5) $frac{4}{25} = 0,16$

6) $-15 < 0$

7) $|-15| > 0$

8) $18 > (-34)$