1) 5/9 * 0,87 - (5/9 *1,83) =5/9 (0,87 - 1,83) = 5/9 *(-0,96) =5/9*(-96/100)= -8/15
2) - 0,77 *4/9 - (4/9 *2,23)= - 4/9 ( 0,77 +2,23)= -4/9 * 3 = -12/9 =-1 и 1/3
3) 195/4 : 39/10 + 41/5 * ( -63/10)=25/2 -19/10 = 106/10 = 10,6
1) 5/9 * 0,87 - (5/9 *1,83) =5/9 (0,87 - 1,83) = 5/9 *(-0,96) =5/9*(-96/100)= -8/15
2) - 0,77 *4/9 - (4/9 *2,23)= - 4/9 ( 0,77 +2,23)= -4/9 * 3 = -12/9 =-1 и 1/3
3) 195/4 : 39/10 + 41/5 * ( -63/10)=25/2 -19/10 = 106/10 = 10,6