Найдите значение выражения (13-8 5/12)+(17 1/2-16 1/5);(63 2/3+3 1/8)+(13-10 5/9)

1) (13-8 5/12)+(17 1/2-16 1/5)=(12 12/12-8 5/12)+((17-16)+(1/2-1/5)=4 7/12+1 3/10=(4+1)+(7/12+3/10)=5+((35+18)/60)=5 53/60;2) (63 2/3+3 1/8)+(13-10 5/9)=(63+3)+(2/3+1/8)+(12 9/9-10 5/9)=66+((16+3)/24)+(12-10)+(9/9-5/9)=66 19/24+2 4/9=(66+2)+(19/24+4/9)=68+((57+32)/72)=68 89/72=69 17/72.