1) (4(8)-7(8)):0.6= (32-56):0.6= (-24):0.6= -40
2) (9,3(4)-1,5(4)):(-6)= (37,2-6):(-6)= 31,2:(-6)= -5,2
3) (2,1(1/3)-6(1/3)):(-1,3)= (0,7-2):(1,3)= -1,3
1) (4(8)-7(8)):0.6
= (32-56):0.6
= (-24):0.6
= -40
2) (9,3(4)-1,5(4)):(-6)
= (37,2-6):(-6)
= 31,2:(-6)
= -5,2
3) (2,1(1/3)-6(1/3)):(-1,3)
= (0,7-2):(1,3)
= -1,3