This is one of those difficult and impossible to answer questions.
Addition and subtraction is the most basic form of math known to man.
It has been around... probably before mankind evolved into "homo sapiens"
The term or use of easy math like this has probably been around for more than 200.000 years, and it is therefore not possible to determine who this first mathematical genius was :)
addition and subtract in integers
They used 0 as a place holder, and something about only adding increments of numbers so you would get an additional 0, and then they would subtract to get their actual answer, because they already knew how to subtract.
Michael stiple invented addition
The addition sign was invented in Oakland California.
Addition and subtraction are prehistoric, they were used before man could write, even som animals addd and subtract (raven, crows, apes, etc.)
Jesus, in 14AD
to add and subtract yardage
You can multiply the answer to see if it's right. same with multiplication, addition, and subtraction. Multiplication, you divide, to check addition, you subtract, and subtract, you add.
The plus or addition sign was invented by Michael Stiple in 1544
Addition was invented in 1539 by George Henry Maddick.
subtract divide multiply addition
Pascal