1+(5•9-40:10+72:9-64:8+2-15:5):5-63/7=

Răspuns :

1+(5•9-40:10+72:9-64:8+2-15:5):5-63:7=
=1+(45-4+8-8+2-3):5-9=
=1+40:5-9=
=1+8-9=
=9-9=
=0.

Sper ca te-am ajutat!!