Odpowiedź :
Odpowiedź:
zad 4
a)
(16x - 20y)/4 - (15x + 35y)/5 = 16x/4 - 20y/4 - 15x/5 - 35y/5 =
= 4x - 5y - 3x - 7y = x - 12y
b)
(4x - 12y)/2 - (3 * 10x - 25y)/5 = 4x/2 - 12y/2 - 30x/5 +25y/5 =
= 2x - 6y - 6x + 5y = - 4x - y
Odpowiedź:
zad 4
a)
(16x - 20y)/4 - (15x + 35y)/5 = 16x/4 - 20y/4 - 15x/5 - 35y/5 =
= 4x - 5y - 3x - 7y = x - 12y
b)
(4x - 12y)/2 - (3 * 10x - 25y)/5 = 4x/2 - 12y/2 - 30x/5 +25y/5 =
= 2x - 6y - 6x + 5y = - 4x - y