Автор - angelina092009

Помогите решить пожалуйста ​

Ответ

Автор - MoLineTy

5) 2⅞ -2¾ * 2³ = 2⅞- 2 6/8 * 8 = 2 ⅛ *8 = 15/8 * 8 = 15

6)5 + 1 2/7 - 27/42 * ⅓ = 5 + 1 12/42 - 27/42 * ⅓ = 5 + 54/42 - 27/42 * ⅓ = 5 + 27/42 * ⅓ = 5 + 9/14 * 1/3 = 5 + 3/14

дальше хз

Ответ

Автор - akunyaastana

Ответ:

2 frac{7}{8}  - 2 frac{3}{4}  times {2}^{3}  = 2 frac{7}{8}  -  frac{11}{4}  times 8 = 2 frac{7}{8}  - 22 =  - 19 frac{1}{8}

5 + 1 frac{2}{7}  -  frac{27}{42}  times  frac{1}{3}  = 6 frac{2}{7}  -  frac{9}{42}  = 6 frac{12}{42}  -  frac{9}{42}  = 6 frac{4}{42}  = 6 frac{2}{21}

3 frac{3}{8}  times 2 frac{1}{15}  times  frac{4}{9}  times 2 frac{2}{3}  =  \  frac{27}{8}  times  frac{31}{15}  times  frac{4}{9}  times  frac{8}{3}  =  frac{3 times 31 times 4}{15}  =

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