Odpowiedź:
3x+2x-6=5x-6
2a-9a+6=6-7a
y-6y-15= -5y-15
5x+4-3x+18=2x+22
-3z+2-8z+12=14-11z
8x²-10xy+12xz+16x
-2x²+16xy-14x
6x-8y+10+18x-15y+21= 24x-23y+31
3a+3b-4a+4b-10a+20b= -11a+27b
34a-32b+10-3a+57b+33= 31a+25b+43
8a²-12ab+36ac-48a
