Oblicz.: Zad 1 a) - (m-3n) - (4-3m + n) = b) (1 + 2a + 3b) + (4 + 5a + 6b) - (7 + 8a + 9b) = c) - [6 - (x^2 + y^2)] + x^2 - y^2 = d) - (8kl + 1) - [ - (-2 + 10kl)] = e) 6m - (9n - 2m - 1) = f) x + y + ( - x + 2y - 1) =
Oblicz.:
Zad 1
a) - (m-3n) - (4-3m + n) =
b) (1 + 2a + 3b) + (4 + 5a + 6b) - (7 + 8a + 9b) =
c) - [6 - (x^2 + y^2)] + x^2 - y^2 =
d) - (8kl + 1) - [ - (-2 + 10kl)] =
e) 6m - (9n - 2m - 1) =
f) x + y + ( - x + 2y - 1) =