4. Вычислите: 1)-8.37.5; 2)-25.23.(-0,4); 3) 0,125 (-8) (-0,25). (-4); 4)-8,47.5(-200)·(-0,001); 3 5)·(-)(-1)-(-28); 9 7 (6)-(-)(-26).

Ответ: 1) -1480, 2) 230, 3) 1, 4) 8,47, 5) 12, 6) -26

1. 1) -8 ⋅ 37 ⋅ 5

   -8 ⋅ 37 ⋅ 5 = -8 ⋅ 5 ⋅ 37 = -40 ⋅ 37 = -1480

2. 2) -25 ⋅ 23 ⋅ (-0,4)

   -25 ⋅ 23 ⋅ (-0,4) = -25 ⋅ (-0,4) ⋅ 23 = 10 ⋅ 23 = 230

3. 3) 0,125 ⋅ (-8) ⋅ (-0,25) ⋅ (-4)

   0,125 ⋅ (-8) ⋅ (-0,25) ⋅ (-4) = 0,125 ⋅ (-8) ⋅ (-0,25) ⋅ (-4) = -1 ⋅ (-1) = 1

4. 4) -8,47 ⋅ 5 ⋅ (-200) ⋅ (-0,001)

   -8,47 ⋅ 5 ⋅ (-200) ⋅ (-0,001) = -8,47 ⋅ (-1) = 8,47

5. 5) ⁵/₉ ⋅ (-³/₁₄) ⋅ (-1¹/₅) ⋅ (-28)

   ⁵/₉ ⋅ (-³/₁₄) ⋅ (-1¹/₅) ⋅ (-28) = ⁵/₉ ⋅ (-³/₁₄) ⋅ (-⁶/₅) ⋅ (-28) = ⁵/₉ ⋅ ³/₁₄ ⋅ ⁶/₅ ⋅ (-28) = ¹/₃ ⋅ ¹/₇ ⋅ ²/₁ ⋅ 1 ⋅ (-28) = ²/₂₁ ⋅ (-28) = -⁵⁶/₂₁ = -2¹⁴/₂₁ = -2²/₃

6. 6) -⁷/₁₁ ⋅ (-²/₁₃) ⋅ ¹¹/₂₁ ⋅ (-26)

   -⁷/₁₁ ⋅ (-²/₁₃) ⋅ ¹¹/₂₁ ⋅ (-26) = ⁷/₁₁ ⋅ ²/₁₃ ⋅ ¹¹/₂₁ ⋅ (-26) = ¹/₁ ⋅ ²/₁₃ ⋅ ¹/₃ ⋅ (-26) = -²/₁₃ ⋅ ²⁶/₃ = -⁵²/₃₉ = -1¹³/₃₉ = -1¹/₃

Ответ: 1) -1480, 2) 230, 3) 1, 4) 8,47, 5) -2 ²/₃, 6) -1 ¹/₃

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