In the sixteenth century, mathematicians began using the symbols "+" for addition and "−" for subtraction to simplify mathematical notation and enhance clarity in calculations. These symbols helped streamline the representation of operations, making it easier to convey complex ideas without lengthy verbal descriptions. The adoption of these symbols was part of a broader movement towards standardization in mathematical practices, which facilitated communication and learning in the field.
15th Century by Johannes Widmann
19th century.....sorry this is all i know....
One of anything plus five of the same thing is equal to six of them.
Purple.
Because adding a negative is the same as subtracting a positive. In other words, minus a plus is he same as plus a minus. For example 5+ (-3) = 5-3 = +2 5 -(+3) = 5-3 = +2 Remember minus a plus = = minus plus a minus = minus plus a plus = plus minus a minus = plus
15th Century by Johannes Widmann
15th Century by Johannes Widmann
The addition symbol was first used in 1544 by Michael Stiple. I do not know when the subtraction sign was first used, I'm still trying to find that out myself!
the 16th century, specifically 1544.
19th century.....sorry this is all i know....
Same mathematical signs equal plus Different mathematical signs equal minus Plus Plus = Plus (+)(+) = + Minus Minus = Plus (-)(-) = + Plus Minus = Minus (+)(-) = - Minus Plus = Minus (-)(+) = - So the direct answer to your question would be: plus minus equals minus
1/2
three sixteenth
A plus + a plus is a plus.
A minus and a minus makes a plus A plus and a plus makes a plus A minus and a plus or plus and a minus makes a minus 7 - -2 is a minus and a minus Therefore the answer is 7 + 2 = 9
@ turn of the century, plus or minus a few decades
One of anything plus five of the same thing is equal to six of them.