-1,25*(8*4)= (8-3/7)*(-7)= 0,25*(-7)*4= (-8 1/3-2/3):3= (2/7+1/9)*(-7)= 3 1/3*1/2*(-3)=
-1,25*8*4= - 40 (8-3/7)*(-7)=53/7*(-7)= -53 0,25*(-7)*4= - 7 (-8 цел. 1/3 - 2/3) / 3=(-27/3) / 3 = -27 (2/7+1/9)*(-7)=25/63 *(-7) = -225 3 цел. 1/3 * 1/2 *(-3) = 5/3*(-3)= -5