September 2018 1 12 Report

Zredukuj wyrazy podobne w podanym wyrażeniu i oblicz jego wartość liczbową.

a) x - 2x + 3x - 4x dla x = -3

b) x + 2y + 3z - 4x - 5y - 6z dla x = 1, y = -½ i z = 0,3

c) a + 0,1b + 0,2c - 0,2a - 0,3b - 0,4c dla a = 10, b = -20, c = 30


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