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calculati reducand termenii asemenea:
a) 2x+3y+5z-4x+2y-3z= ??


Răspuns :


2x+3y+5z-4x+2y-3z= -2x+5y+2z

2x + 3y + 5z - 4x + 2y - 3z = - 2x + 5y + 3z