Craft production remedy the inefficiency of mass production through the elimination of waste. Craft production is a part of the informal economy in many cities, such as Istanbul, Turkey where the informal craft economy is a vital source of income for the Turkish craftspeople. Craft markets are highly dependent on social interactions, and verbal training which results in variations in the goods produced. Often, the craft economy consists of craft neighbourhoods, by which a community is structured on the craft activity present in the area. Often used in the household, many craft goods such as historic Muman Pottery in Korea, originated from
Like terms The like terms in this expression are the terms that can be grouped together by having exactly the same set of unknown factors. Here, the sets of unknown factors are formula_15 formula_16 and formula_17. By the rule in the first example, all terms with the same set of unknown factors, that is, all like terms, may be combined by adding or subtracting their coefficients, while maintaining the unknown factors. Thus, the expression becomes formula_18 The expression is considered simplified when all like terms have been combined, and all terms present are unlike. In this case, all terms now have different