"Plus" and "Minus" are mathematical symbols, the duo perform a great function in arithmetic, to to the extent that a tattered illiterate understands the concept of the two terms very well.
Having known that the plus and minus signs ( + and − ) are mathematical signs or symbols which are used as a measure to represent the notion of positivity and negativity, it is generally accepted that the two signs look familiar than every other mathematical symbols as it is used in individual's daily activities
In like manner, the plus of life appears to be the positive aspect of life which contrarily lead man into the negative aspect of life .
The plus or the addition ➕ of life is when a year old boy developed and become a teenager with some level of skills being added to him, till when the same boy turns a graduate, to the stage of getting married, having and nurturing his own children and to the stage of becoming a grandpa...
The minus or the subtraction ➖ of life starts immediately when growth and development begins in the afformentioned boy in which the a particular stage of his life brings him near the grave... Minus which is also called subtraction sets in because the plus is stylishly promoting man into the stage of "no continuity" which can as well be called the full stop stage....
Practical illustration:
Plus and minus of life means: (➕ a year of birth ➖ a year of death)
Therefore, as a year is being added to a man, a year is being subtracted on his stay on the earth...