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no.1
=0,75:0,15 = ⁷⁵/₁₀₀ : ¹⁵/₁₀₀ = ⁷⁵/₁₀₀ x ¹⁰⁰/₁₅ = 5
No.2.
= 1,5 : 0,3 = ¹⁵/₁₀ : ³/₁₀ = ¹⁵/₁₀ x ¹⁰/₃ = 5
No.3.
= 2,75 : 1,5 = ²⁷⁵/₁₀₀ : ¹⁵/₁₀ = ²⁷⁵/₁₀₀ x ¹⁰/₁₅ = ¹¹/₆
No.4.
= 0,10 : 0,2= ¹⁰/₁₀₀ : ²/₁₀ = ¹⁰/₁₀₀ x ¹⁰/₂ = ¹/₂
No.5.
=0,45 : 0,3 = ⁴⁵/₁₀₀ : ³/₁₀ = ⁴⁵/₁₀₀ x ¹⁰/₃ = ³/₂