Odpowiedź:
a)
1/2x - 2/3 [x-(4x +1 )] = - x+1/4
1/2x - 2/3(x - 4x - 1) = -x + 1/4
1/2x - 2/3(-3x - 1) = -x + 1/4
1/2x + 2x + 2/3 = -x + 1/4
2 1/2x + x = 1/4 - 2/3
3 1/2x = 3/12 - 8/12
7/2x = -5/12 /*2/7
x = -5/12 * 2/7 = -5/42
b)
2/3(3x - 1) - 3/2[2x + 3(x - 2)] = 1
2x - 2/3 - 3/2(2x + 3x - 6) = 1
2x - 2/3 - 3/2(5x - 6) = 1
2x - 2/3 - 15/2x + 9 = 1
2x - 7 1/2x = 1 - 8 1/3
-5 1/2x = -7 1/3
-11/2x = -22/3 /*(-2/11)
x = 22/3 * 2/11 = 4/3 = 1 1/3
Szczegółowe wyjaśnienie:
