Oblicz:
a)1 7/10+1 1/15:2 2/3=
b)2 ⅖-3²:1 1/2=
c)9 ⅜:(1 ½)³-1 ⅚=
d)13,27-1,25+9,39=
e)1,2-0,8×0,15=
f)9,2-0,78:0,6=
g)0,26:(6,35-4 ⅖)=
h)3 2/11×(6 5/21-1 11/21)=
Pliss pomóżcie mi to rozwiązać:)
Z góry dziękuje :-)
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A) 1⁷/₁₀ + 1¹/₁₅ : 2²/₃= 1⁷/₁₀+ ¹⁶/₁₅ : ⁸/₃= 1⁷/₁₀ + ¹⁶/₁₅ × ³/₈ = 1⁷/₁₀ + ⁴/₁₀ =
1¹¹/₁₀ = 2¹/₁₀
B) 2 ⅖-3²:1½ = 2²/₅ - 9 : ³/₂ = 2²/₅ - 9 × ²/₃ = 2²/₅ - 6 = - 3³/₅
c)9 ⅜:(1 ½)³-1 ⅚= ⁷⁵/₈ : (³/₂ )³ - 1⁵/₆ = ⁷⁵/₈ : ²⁷/₈ - 1⁵/₆ = ⁷⁵/₈ × ⁸/₂₇ - 1⁵/₆ =
²⁵/₉ - 1⁵/₆ = ⁵⁰/₁₈ - 1¹⁵/₁₈ = 2¹⁴/₁₈ - 1¹⁵/₁₈ = 1³²/₁₈ - 1¹⁵/₁₈ = ¹⁷/₁₈
d)13,27-1,25+9,39=12,02 + 9,39 = 21,41
e)1,2-0,8×0,15=1,2 - 0,12 = 1,08
f)9,2-0,78:0,6= 9,2 - 1,3 = 7,9
g)0,26:(6,35-4 ⅖)= ²⁶/₁₀₀ : (6³⁵/₁₀₀ - 4⁴⁰/₁₀₀) = ²⁶/₀₀ : (5¹³⁵/₁₀₀ - 4⁴⁰/₁₀₀) =
²⁶/₁₀₀ : 1⁵/₁₀₀ = ²⁶/₁₀₀ : ¹⁹⁵/₁₀₀ = ²⁶/₁₀₀ × ¹⁰⁰/₁₉₅ = ²⁶/₁₉₅
h)3 ²/₁₁×(6 ⁵/₂₁-1 ¹¹/₂₁)= 3²/₁₁ × (5²⁶/₂₁ - 1¹¹/₂₁) = 3²/₁₁ × 4¹⁵/₂₁ = ³⁵/₁₁ × ⁹⁹/₂₁ = ⁴⁵/₃ = 15