Odpowiedź:
a)
2(2p - 4) + 4-2p / 2 = 6p - 8 + 4-2p / 2 = 6p - 8 + 2(2 - p) / 2 = 6p - 8 + 2 - p = 5p - 8 + 2 = 5p - 6
b)
3(2 - 5m) - 12m + 9 / 3 = 6 - 15m - 12m + 9 / 3 = 6 - 15m - 3(4m + 3) / 3 = 6 - 15m - (4m + 3) = 6 - 15m - 4m - 3 = 3 - 15m - 4m = 3 - 19m
c)
-5(4t - 2) - 30t - 5 / 5 = -20t + 10 - 30t - 5 / 5 = -20t + 10 - 5(6t - 1) / 5 = -20t + 10 - (6t - 1) = -20t + 10 - 6t + 1 = -26t + 10 + 1 = -26t + 11
d)
6x - 14 / 2 + 6 + 15x / 3 = 2(3x - 7) / 2 + 6 + 15x / 3 = 2(3x - 7) / 2 + 3(2 + 5x) / 3 = 3x - 7 + (2 + 5x) / 3 = 3x - 7 + 2 + 5x = 8x - 7 +2 = 8x - 5
e)
12 - 20y / -4 + 14 - 7y / 7 = 4(3 - 5y) / -4 + 14 - 7y / 7 = 4(3 - 5y) / -4 + 7(2 - y) / 7 = -(3 - 5y) + 7(2 - y) / 7 = -(3 - 5y) + 2 - y = -3 + 5y + 2 - y = -1 + 5y -y = -1 +4y
Mam nadzieję, że pomogłem.
