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!
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∙ 14y agoWiki User
∙ 13y agoThe sixteenth.
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∙ 12y ago15th Century by Johannes Widmann
15th Century by Johannes Widmann
15th Century by Johannes Widmann
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
@ turn of the century, plus or minus a few decades
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
A minus plus a minus will give a sum with a minus also.
Yes it does. A minus is the opposite of something, so the minus of a minus is a plus.
A plus with a minus under it means "plus or minus" in math.
yes. An opposite number is the negative of a positive number, for example -5 and +5 are opposite numbers. Since minus x plus is minus and plus x minus is minus and plus x plus is plus and minus x minus is plus then the product of opposites is the same.