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-2x -1 = x
-2x -x = 1
-3x = 1 | : (-3)
x = -0.33333333333333
f) 2/5 (3 - x) = -2
-x +2 = -2
-x = -2 -2
-1x = -4 | : (-1)
x = 4
g) 3/4 (2 - 3x) = -6
-3x +3 = -6
-3x = -6 -3
-3x = -9 | : (-3)
x = 3
h) 1/5 (x - 3) = 9 - x
x -3 = -x +9
x +x = 9 +3
2x = 12 | : 2
x = 6
i) 0,6 + x/2 = x + 1
x = x +1
x -x = 1
0x = 1 | : 0
Równanie jest sprzeczne - nie posiada rozwiązań x=0