Zad. 1
Wykonaj dodawanie
a) (5x - 2) + (4x + 3) =
b) (2xy + 5y - 6) + (xy + y - 4) =
c) (3a + 6b - c) + (c - 2b + 7a) =
d) (2ax - 2a - 3) + (4+ 2a - ax) =
Usun nawiasy i zredukur wyrazy podobne
a) (1/5m + 2/5n - 1) + (2 3/4 -2/3n - 1/5m) =
b) (0/8xy - 1,2y + 5) + (0/5xy +0/4 + 3)=​.