Lösung | |
a) -4,5x - (0,2y - (7,2x - 0,8y - 1,7x)) = -4,5x - (0,2y - 5,5x + 0,8y) |
= -4,5x - y + 5,5x = x - y |
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b) -8,1y + 3,4z + (5,5y - 5,4z) + 3,6y = y - 2z |
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c) -(12,7y² - (-11,2x² + 10,7y² - 13,2x²)) = -(12,7y² +24,4x² - 10,7y²) |
= -24,4x² - 2y² |
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d) -(-(5,7x + 4,2y - x - 6,2y)) - 4,7x = -(-4,7x + 2y) - 4,7x = -2y |
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