Răspuns :
... =10*{8+9*[0,5+0,2(1,5+1,5)]}-179 =
=10*{8+9*[0,5+0,2(3)]}-179=
=10*{8+9*[0,5+0,6]}-179=
=10*{8+9*[1,1]}-179=
=10*{8+9,9}-179=
= 10*17,9 - 179
=179 - 179 = 0
=10*{8+9*[0,5+0,2(3)]}-179=
=10*{8+9*[0,5+0,6]}-179=
=10*{8+9*[1,1]}-179=
=10*{8+9,9}-179=
= 10*17,9 - 179
=179 - 179 = 0