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5/4x - 4 + 6x = 2 - 3x/4 - x + 2/5
5/4x + 6x + 3x/4 + x = 2 + 2/5 + 4 |*4
5x + 24x + 3x + 4x = 8 + 8/5 + 16
36x = 25 3/5 | :36
x = 32/45
x-1/2- x-2/4 - x-4/8 +1= 5(3-x)/4 +2x
x - 1/2 - x - 2/4 - x - 4/8 + 1 = 15/4 - 5x/4 + 2x |*4
4x - 2 - 4x - 2 - 4x - 2 + 4 = 15 - 5x + 8x
4x - 4x - 4x + 5x - 8x = 15 + 2 + 2 + 2 - 4
-7x = 17 | :(-7)
x = -2 3/7
masakryczne te zadaniee ;P