8целых 3/4*2целых 4/7-10целых1/8*3целых1/3

8³/₄×2⁴/₇-10¹/₈×3¹/₃ = - 11,25

8³/₄×2⁴/₇ =³⁵/₄×¹⁸/₇  = ³⁵ˣ¹⁸/₄ₓ₇ = ⁵ˣ⁹/₂ = ⁴⁵/₂

10¹/₈×3¹/₃ =⁸¹/₈×¹⁰/₃  =⁸¹ˣ¹⁰/₈ₓ₃ = ²⁷ˣ⁵/₄ₓ₁ = ¹³⁵/₄

⁴⁵/₂ - ¹³⁵/₄ = ⁴⁵ˣ²/₄ - ¹³⁵/₄ = ⁹⁰⁻¹³⁵/₄ = - ⁴⁵/₄ = - 11¹/₄ = - 11,25

8 3/4*2
4/7=35/4*18/7=5/2*9=45/2=22,5
10 1/8* 3 1/3=81/10*10/3=27