Odpowiedź :
a) 4(2a + 8b) = 8a + 32b
b) (4x + 3y) - (6x - 5y) = 4x + 3y - 6x + 5y = -2x + 8y
c) (15w - 45k) / 5 = 3w - 9k
d) 3(7x-4) -3(5+9x) = 21x - 12 -15 -27x = -6x - 27
e) (2a + 7)(8-3b) = 16a + 56 - 6ab - 21b
f) (6x -7y) / (1/2) = 12x - 14y
a) 4(2a + 8b) = 8a + 32b
b) (4x + 3y) - (6x - 5y) = 4x + 3y - 6x + 5y = -2x + 8y
c) (15w - 45k) / 5 = 3w - 9k
d) 3(7x-4) -3(5+9x) = 21x - 12 -15 -27x = -6x - 27
e) (2a + 7)(8-3b) = 16a + 56 - 6ab - 21b
f) (6x -7y) / (1/2) = 12x - 14y