х:7,5=6/16
4 целых 1/9:х=7,4
9 целых 2/11 х = 10,1
2,8х= 9 целых 1/3

х:7,5=⁶/₁₆х:7,5=³/₈х:7,5=0,375x = 0,375 × 7,5x = 2,8125*********4¹/₉:х=7,4³⁷/₉:х=⁷⁴/₁₀x = ³⁷/₉ : ⁷⁴/₁₀ x = ³⁷/₉ × ¹⁰/₇₄x = ³⁷ˣ¹⁰/₉ₓ₇₄x = ¹⁰/₁₈x = ⁵/₉***************9²/₁₁ х = 10,1¹⁰¹/₁₁ х = ¹⁰¹/₁₀x = ¹⁰¹/₁₀ : ¹⁰¹/₁₁x = ¹⁰¹/₁₀ × ¹¹/₁₀₁x = ¹⁰¹ˣ¹¹/₁₀ₓ₁₀₁x = ¹¹/₁₀x = 1,1********2,8х= 9¹/₃²⁸/₁₀х= ²⁸/₃x = ²⁸/₃ : ²⁸/₁₀x = ²⁸/₃ × ¹⁰/₂₈x = ²⁸ˣ¹⁰/₃ₓ₂₈x = ¹⁰/₃x = 3¹/₃