Question

(13,75+9целое 1/6)*1,2 сколько

Answer 1

(13.75 + 9 1/6) * 1.2 =27 1/2 = 27,5
1)13,75+9 1/6= 13 75/100 +9 1/6 = 1375/100 +55/6= 55/4  +  55/6 =  
(55 × 3  +  55 × 2)/12 = 165/12  +  110/12 =  275/12 = 22 11/12
2)22 11,12 * 1,2 = 22 11/12 * 1 2/10= 275/12  ×  6/5 =  55/2 = 27 1/2 = 27,5