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4/(4x - 1) = -14
pomnozmy obie strony rownania przez 4x - 1
4 = -14(4x - 1)
-56x + 14 = 4
-56x = 4 - 14
-56x = -10
x = 10/56
x = 5/28
x = 0,1786
b)
3/(x + 2) = 1/(x - 2)
3(x - 2) = x + 2
3x - 6 = x + 2
na lewa strone przenosimy wyrazenia z x, na prawa bez
3x - x = 2 + 6
2x = 8
x = 4