(83,2-80 1/6)×3/13 уравнение

Question

(83,2-80 1/6)×3/13 уравнение

Answer 1

=(83 2/10 - 80 1/6)*3/13 = (83 6/30 - 80 5/30) * 3/13= 3 1/30*3/13= 91/30*3/13= 91/130