a) = 2a+4a-3b+5c+5c-2b = 6a-5b+10c
b) = 5x+3y+2y-4z-5y-6z = 5x-10z
c) = -3r-2r+4s+t-6r-5s = -11r-s+t
d) = 4k-2m-n+k+m+3m-n = 5k+2m-2n
e) = 7a-a-b-ab+2a-3ab = 8a-b-4ab
f) = 4xy-2x-3y+5x-y+5xy = 9xy+3x-4y
g) = 6m-2m²-n+3m-2n-5m² = 9m-7m²-3n
h) = -2t-3t+t²-5s-4r-2t²+s = -5t-t²-4s-4r
Mam nadzieję, że pomogłam. Liczę na naj :)
