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geschrieben am: 26.11.2002 um 22:01 Uhr
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also:
zur a)
2(x+1)-5[2(x+1)-4(3-x)]-3 = x-6(8x-14)-3(1-x)
2x + 2 - 5(2x + 2 - 12 + 4x) - 3 = x - 48x + 84 - 3 + 3x
2x + 2 - 10x - 10 + 60 - 20x - 3 = x - 48x + 84 - 3 + 3x
-28x + 52 = -44x + 81 ... /+ 28x
52 = -16x + 81 ... /- 81
-29 = -16x ... /: (-16)
x = 29/16
zur b)
4-5(3x+6)-(2,4x-17) = 0,5[2(x-6)-6(x-5)]
4 - 15x - 30 - 2,4x + 17 = 0,5(2x - 12 - 6x + 30)
4 - 15x - 30 - 2,4x + 17 = x - 6 - 3x + 15
-9 - 17,4x = -2x + 9 ... /+ 9
-17,4x = -2x + 18 ... /+ 2x
-15,4x = 18 ... /: (-15,4)
x = -18/154 ... /kürzen
x = -9/77
is zwar ohne garantie, aber ich glaub, dass das richtig is !!!
mfg
NicK
Geändert am 26.11.2002 um 22:08 Uhr von nickname2001 |
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