Odpowiedź :
Odpowiedź:
a)
x/3 - 1/4 = 5x - (x + 3)/2
1/3x - 1/4 = 5x - 1/2x - 3/2
1/3x - 4 1/2x = -1 1/2 + 1/4
2/6x - 4 3/6x = -1 2/4 + 1/4
-4 1/6x = -1 1/4
-25/6x = -5/4 /*(-6/25)
x = 5/4 * 6/25 = 1/2 * 3/5 = 3/10
b)
(2x - 1)/4 + 1/2 = 4x - (3x - 2)/8
1/2x - 1/4 + 1/2 = 4x - 3/8x + 1/4
1/2x - 3 5/8x = 1/4 - 1/4
4/8x - 3 5/8x = 0
-3 1/8x = 0
x = 0
c)
(x + 1)/2 - (2x - 1)/3 = (?) (3x - 1)/4 - (3x - 2)/3
1/2x + 1/2 - 2/3x + 1/3 = 3/4x - 1/4 - x + 2/3
1/2x - 2/3x + 1/4x = -1/4 + 2/3 - 1/2 - 1/3
2/4x + 1/4x - 2/3x = -1/4 + 1/3 - 2/4
3/4x - 2/3x = -3/4 + 1/3
9/12x - 8/12x = -9/12 + 4/12
1/12x = -5/12 /*12
x = -5/12 * 12 = -5
Szczegółowe wyjaśnienie: