September 2018 1 21 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 )

prosze o dokladne rozwiazanie dziekuje bardzo z gory :)


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