October 2018 2 14 Report

1)USUŃ NAWIASY I ZREDUKUJ WYRAZY PODOBNE :

A) 5x+(2x-7)-9x-(-3x+8)+20-8x

B)-5x+(-2y+4x)-(7x-8y)-x+(2-6y)

C)-9z-(4-3z)-8y-(-7z+8y)+(-2y-7)


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