Oblicz .
-2·0.25+(-2)
___________ =
-0.1·[-1.3+(-1.2)]
0.001 : (-0.05) =
(5-2 ¾ ) · ((10-10 ¹/₉)=
(7-4⅘) ·(17 ⅗ + 12.4) =
⅚ ·⁶/₈ ·⁸/₇ ·⁷/₃ ·⁴/₃ ·3 =
(¹/₇ - ½ ) : (-10 ¹/₇ + 10 ¹/₁₄ )=
(-17 ¼) ·8·(-0.125)·(-4)=
6:[5:(-0.15)+⅓ =
5-(-2)·(-0.2)+0.4-1.2:3=
4.3·⅓ -1⅔ :0.25 =
( ⁵/₁₉ - ⅕ ) ·190 =
5 ¹¹/₂₁ · 42-9 ³/₂₅ ·50 =
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-2·0.25+(-2) -0.5+(-2) -0.5-2 -2.5
_________________ = _____________ = _________ = _____ = -2.5 : 0,25 = -10
-0.1·[-1.3+(-1.2)] -0.1·[-1.3-1.2] -0.1·(-2.5) 0.25
0.001 : (-0.05) = - 0,02
(5-2 ¾ ) · (10-10 ¹/₉)= (4 ⁴/₄ - 2 ¾) · (10 - 10 ¹/₉) = 2 ¼ · (-¹/₉) = ⁹/₄ · (-¹/₉)
= ¼ · (- ¹/₁)= ¼ · (-1) = -¼
(7-4 ⅘) ·(17 ⅗ + 12.4) = (6 ⁵/₅ - 4 ⅘) · (17 ⅗ + 12 ⁴/₁₀) = 2 ⅕ · (17 ⅗ + 12 ⅖) =
= 2 ⅕ · 29 ⁵/₅ = 2 ⅕ · 30 = 66
⅚ ·⁶/₈ ·⁸/₇ ·⁷/₃ ·⁴/₃ ·3 = ⁵/₁ · ¹/₈ · ⁸/₇ · ⁷/₃ · ⁴/₃ · 3 = ⁵/₁ · ¹/₁ · ¹/₁ · ⅓ · ⁴/₁ · 3 =
= 5 · 1 · 1 · ⅓ · 4 ·3 = 5 · 1 · ⅓ · 4 · 3 = 5 · ⅓ · 4 · 3 = ⁵/₃ · 4 · 3 = ²⁰/₃ · 3 = ²⁰/₁ · ¹/₁
= 20 · 1 = 20
(¹/₇ - ½ ) : (-10 ¹/₇ + 10 ¹/₁₄ )= (²/₁₄ - ⁷/₁₄) : (- 10 ²/₁₄ + 10 ¹/₁₄) =
= ( - ⁵/₁₄) : ( - ¹/₁₄) = ( - ⁵/₁₄) · (- ¹⁴/₁) = (-⁵/₁) · (-¹/₁) = -5 · (-1) = 5
(-17 ¼) ·8·(-0.125)·(-4)= (-17.25) · 8 · ( - 0.125) · (-4) = - 138 · (- 0.125) · (-4)
= 17.25 · (-4) = - 69
6:[5:(-0.15)+⅓ ]= 6:[ 5:(- ³/₂₀) + ⅓ ] = 6: [5·(-²⁰/₃) + ⅓] = 6:[ - ¹⁰⁰/₃ + ⅓] =
= 6:[-33 ⅓ + ⅓ ] = 6 : (-33) = ⁶/₁ : (- ³³/₁) = ⁶/₁ · (- ¹/₃₃) = ³/₁ · ¹/₁₁ = ³/₁₁
5-(-2)·(-0.2)+0.4-1.2:3= 5-(+0.4)+0.4-0.4=5-0.4+0.4-0.4=4.6+0.4-0.4=5-0.4=4.6
4.3·⅓ -1⅔ :0.25 =4³/₁₀ · ⅓ - 1⅔ : ¼ = ⁴³/₁₀ · ⅓ - 1⅔ : ¼ = ⁴³/₃₀ - ⁵/₃ : ¼ =
= ⁴³/₃₀ - ⁵/₃ · ⁴/₁ = ⁴³/₃₀ - ²⁰/₃ = 1¹³/₃₀ - 6⅔ = 1¹³/₃₀ - 6 ²⁰/₃₀ = - 5 ⁷/₃₀
( ⁵/₁₉ - ⅕ ) ·190 = (²⁵/₉₅ - ¹⁹/₉₅) · 190 = ⁶/₉₅ · 190 = ⁶/₁ · ²/₁ = 6 · 2 = 12
5 ¹¹/₂₁ · 42 - 9 ³/₂₅ · 50 = ¹¹⁶/₂₁ · 42 - ²²⁸/₂₅ · 50 = ¹¹⁶/₁ · ²/₁ - ²²⁸/₁ · ²/₁ =
= 116 · 2 - 228 · 2 = 232 - 456 = -224
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