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Number line with drawed numbers 0 and 1. Horizontal ray. ... Number line with -2 and 3 as vectors. Addition on the number line with the example (-2)+3=1.
The first mention of the number line used for operation purposes is found in John Wallis's Treatise of Algebra (1685). [2] [page needed] In his treatise, Wallis describes addition and subtraction on a number line in terms of moving forward and backward, under the metaphor of a person walking.
A number-line visualization of the algebraic addition 2 + 4 = 6. A "jump" that has a distance of 2 followed by another that is long as 4, is the same as a translation by 6. A number-line visualization of the unary addition 2 + 4 = 6. A translation by 4 is equivalent to four translations by 1.
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English: Demonstration the addition on the line number (here -2+3). Deutsch: Beispiel einer Addition auf der Zahlengeraden (hier am Beispiel von -2+3). Date:
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