Найдите значение выражения: 8/15 * 25/32 + 1 3/4 ; 2 1/6 - 2/3* 7/12. Найдите значение выражения: 1/2*1 2/3 : 10 ; (1-1/2 ):(1/2-1/3) .                                  

8/15 * 25/32 + 1 3/4 = 2 1/121) 8/15 * 25/32 = 5/122) 5/12 + 1 3/4 = 5/12 + 1 9/12 = 1 14/12 = 2 2/12 =2 1/22 1/6 - 2/3 * 7/12 = 1 7/91) 2/3 * 7/12 = 7/182) 2 1/6 - 7/18 = 2 3/18 - 7/18 = 1 21/18 - 7/18 = 1 14/18 = 1 7/91/2 * 1 2/3 : 10 = 1/121) 1/2 * 5/3 = 5/62) 5/6 : 10 = 5/6 * 1/10 = 5/60 = 1/12(1 - 1/2) : (1/2 - 1/3) = 31) 1 - 1/2 = 1/22) 1/2 - 1/3 = 3/6 - 2/6 = 1/63) 1/2 : 1/6 = 1/2 * 6/1 = 6/2 = 3