Odpowiedzi

  • Użytkownik Zadane
2010-03-03T20:41:59+01:00
A) -5x + (-2y + 4x) - (7x - 8y) - x + (2 - 6y)=-5x-2y+4x-7x+8y-x+2-6y= -9x+2

b) -9z - (4 - 3z) - 8y - (-7z + 8y) + (-2y - 7) =-9z-4+3z-8y+7z-8y-2y-7= z-18y-11
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2010-03-03T20:55:44+01:00
A) -5x + (-2y + 4x) - (7x - 8y) - x + (2 - 6y) = -5x - 2y + 4x - 7x + 8y - x + 2 - 6y = -9x + 2

b) -9z - (4 - 3z) - 8y - (-7z + 8y) + (-2y - 7) = -9z - 4 + 3z - 8y + 7z - 8y - 2y - 7 = z - 18y - 11