Решите по действиям 7\15:3+4\45*2
⁷/₁₅ : 3 + ⁴/₄₅ × 2 = ¹/₃ 1/ ⁷/₁₅ : 3 = ⁷/₁₅ : ³/₁ = ⁷/₁₅ × ¹/₃ = ⁷/₁₅ₓ₃ = ⁷/₄₅ 2/ ⁴/₄₅ × 2 = ⁴/₄₅ × ²/₁ = ⁴ˣ²/₄₅ₓ₁ = ⁸/₄₅ 3/ ⁷/₄₅ + ⁸/₄₅ = ¹⁵/₄₅ = ¹/₃