Question

выполните по действиям
19,6 * 2 1/2 - ( 2,0625 - 1 5/12 ) : 1/8

Answer 1

19.6 * 2 1/2 - (2.0625 - 1 5/12) : 1/8 = 44  2/15
1) 2.0625 - 1  5/12 = 2  1/40 - 1  5/12 = 2  3/120 - 1  50/120 = 1  123/120 - 1  50/120 = 73/120
2) 73/120 : 1/8 = 73/120 * 8/1 = 73/15 = 4  13/15
3) 19.6 * 2  1/2 = 19  6/10 * 2  1/2 = 19  3/5 * 2  1/2 = 98/5 * 5/2 = 98/2 = 49/1 = 49
4) 49 - 4  13/15 = 49/1 - 73/15 = 735/15 - 73/15 = 662/15 = 44  2/15
Ответ: 44  2/15