СРОЧНО!!!ПОМОГИТЕ!!! -2 1/5-14 1/10=16/25:8/15=-5/9*4 1/2=-6 2/9+1 2/3=

1) - 2 1/5 - 14 1/10 = - 11/5 - 141/10 = ( - 22 - 141 ) / 10 = - 163 / 10 = - 16 3/10. 2) 16/25 : 8/15 = 16/25 * 15/8 = 6/5 = 1 1/5 ; 3) - 5/9 * 4 1/2 = - 5/9 * 9/2 = - 5/2 = - 2,5 ; 4) - 6 2/9 + 1 2/3 = - 56/9 + 5/3 = ( - 56 + 15 ) / 9 = - 41/9 = - 4 5/9.