(1.25+1/6)*2,4=решите

Question

(1.25+1/6)*2,4=решите

Answer 1

1) 1,25+1/6=1 25/100 + 1/6 =125/100+1/6=5/4  +  1/6 =   (5 × 3  +  1 × 2)/12 = 15/12  +  2/12 =  17/12 = 1 5/12
2) 1 5/12 * 2,4 = 17/12*2 4/10=17/12*24/10=17/12 * 12/5 = 204/60= 17/5 = 3 2/5
ответ 3 2/5