Rozwiąż równanie.
a)2-(2x+5)=1/2(x-4)-2x
b)-(5x-2)-1/6=2/3(x+1/4)
c)x+2/4 -x/2=3(x-2)/4
a) 2-(2x+5) = 1/2(x-4) -2x
2 -2x -5= 1/2x -2 -2x
-2x -1/2x +2x= -2 -2 + 5
-1/2x = 1 /:(-1/2)
x = 1 *(-2/1)
x = -2
b) -(5x -2) -1/6 = 2/3 (x+1/4)
-5x +2 -1/6 = 2/3x +2/12 /*12
-60x + 24 -2 = 8x +2
-60x - 8x = 2 - 24 +2
-68x = -20 /:(-68)
x = 20/68
x = 5/17
c) x +2/4 -x/2 = 3(x-2)/4 /*4
4x +2 -2x = 3(x-2)
4x +2 -2x = 3x -6
4x -2x -3x = -6 -2
-x = -8 /*(-1)
x = 8
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a) 2-(2x+5) = 1/2(x-4) -2x
2 -2x -5= 1/2x -2 -2x
-2x -1/2x +2x= -2 -2 + 5
-1/2x = 1 /:(-1/2)
x = 1 *(-2/1)
x = -2
b) -(5x -2) -1/6 = 2/3 (x+1/4)
-5x +2 -1/6 = 2/3x +2/12 /*12
-60x + 24 -2 = 8x +2
-60x - 8x = 2 - 24 +2
-68x = -20 /:(-68)
x = 20/68
x = 5/17
c) x +2/4 -x/2 = 3(x-2)/4 /*4
4x +2 -2x = 3(x-2)
4x +2 -2x = 3x -6
4x -2x -3x = -6 -2
-x = -8 /*(-1)
x = 8