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In this article we assume that experts express their view points by way of approximation of Triangular fuzzy numbers. We take the help of fuzzy set theory concept to model the situation and present a method to aggregate these approximations of triangular fuzzy numbers to obtain an overall approximation of triangular fuzzy number for each system and then linear ordering done before the best system is chosen. A comparison has been made betweenapproximation of triangular fuzzy systems and thedoi:10.5281/zenodo.3689474 fatcat:7ervrbzjm5dthjk6yjnn22qovq