##n=-11##
The sentence means ##n-4=-15##
##n-4+4=-15+4## ##n-4+4=-11##
##n-cancel4+cancel4=-11##
##n=-11##
God bless….I hope the explanation is useful.
##n=-11##
The sentence means ##n-4=-15##
##n-4+4=-15+4## ##n-4+4=-11##
##n-cancel4+cancel4=-11##
##n=-11##
God bless….I hope the explanation is useful.
##n=-11##
The sentence means ##n-4=-15##
##n-4+4=-15+4## ##n-4+4=-11##
##n-cancel4+cancel4=-11##
##n=-11##
God bless….I hope the explanation is useful.