Răspuns :
2015+{7×[60:(28-a)-14]:4}:8-2016
2015+(7*(60:(28-@):4):8=2016+14
2015+(7*(60:(28-@):4):8=2030
2015+(7*(60:(28-@):4=2030*8
2015+(7*(60:(28-@):4=16240
2015+(7*(60:(28-@)=16240*4
2015+(7*(60:(28-@)=64960
2015+(7*(60:@)=64960+28
2015+(7*(60:@)=64988
2015+(7*@)=64988*60
2015+(7*@)=3899280
2015+@=3899280:7
2015+@=557040
@=557040-2015
@=0
2015+(7*(60:(28-@):4):8=2016+14
2015+(7*(60:(28-@):4):8=2030
2015+(7*(60:(28-@):4=2030*8
2015+(7*(60:(28-@):4=16240
2015+(7*(60:(28-@)=16240*4
2015+(7*(60:(28-@)=64960
2015+(7*(60:@)=64960+28
2015+(7*(60:@)=64988
2015+(7*@)=64988*60
2015+(7*@)=3899280
2015+@=3899280:7
2015+@=557040
@=557040-2015
@=0