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2010-01-30T16:43:41+01:00
(x-a)/b= (3m-x)/k /*kb
kx-ka=3mb-bx
kx+bx=3mb+ka
x(k+b)=3mb+ka
x=(3mb+ka)/k+b
2010-01-30T16:47:48+01:00
(x-a)/b= (3m-x)/k | * b
x-a = 3m-x/k/b
x=3m-x/k/b + a
2x = 3m/k/b + a |:2
x = (3m/k/b + a) : 2
2010-01-30T16:48:56+01:00
(x-a)/b=(3m-x)/k |*kb
kx-ka=3mb-bx |+bx; +ka
kx+bx=3mb+ka
x(k+b)=3mb+ka |-(k+b)
x=(3mb+ka)/k+b

* - to razy :D