Odpowiedź:
a)
(4x + 1)/3 = (x - 5)/4
4/3x + 1/3 = 1/4x - 5/4
1 1/3x - 1/4x = -1 1/4 - 1/3
1 4/12x - 3/12x = -1 3/12 - 4/12
1 1/12x = -1 7/12
13/12x = -19/12 /*12/13
x = -19/12 * 12/13 = -19/13 = -1 6/13
b)
1/4(1/4x - 1/4) = -3
1/16x - 1/16 = -3
1/16x = -3 + 1/16 /*16
x = -2 15/16 * 16 = -47/16 * 16 = -47
Szczegółowe wyjaśnienie:
