U
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Unit
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peyak kîkway |
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Definition: It is a reference value of a quantity used to measure or compare other values of the same quantity [4].
Examples
Common units used in mathematics:
- length: meter
- mass: kilogram
- temperature: degree celcius
- time: minute
Unknown
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ekâ ka nistaweyihtâkosihk |
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Definition: An unknown is a quantity whose value is not known. In algebra, it is frequently represented by a letter, such as x, y, or z [6].
Examples
The equations below represent unknowns by x, y, or z.
- 3x + 25 = 40
- 7y + 2x = 10
- 2x – 40 = 2z
