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OpenStudy (anonymous):
5xy - 3yz - 5xz + yz - 4xz + 7xy First combine all like terms: (5xy+7xy)+(yz-3yz)-(5xz+4xz) 12xy-2yz-9xz Now replace the x,y & z terms with their numeric values: and evaluate it for x = 10, y = -4, z = -6. 12(10*-4)-2(-4*-6)-9(10*-6) 12*-40-2*24-9*-60 -480-48+540=12 ans. what are the: variables, constants, and coefficients in the simplified expression.
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