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2x - 3/5 x - 3/2 x + 2/5 * x = 2 - 1/2
2 * x - 0,6 * x - 1,5 * x + 0,4 * x= 2 - 0,5
0,3 * x = 1,5
x = 5
2x-3/5x-1,5x=o,4x=1,5
1,4x-1,5x+0,4x=1,5
0,3x=15
x=5
X=4 przez 13