Szczegółowe wyjaśnienie:
2xy - 6 - 10x - 5xy
4xy -8 -10x - 2xy
15x - 5xy -2xy -6x
10x - 2xy - 3xy -6x
13a -5ab -3a -3b +3ab
8a -8ab -2a -2b 2ab
6a -3ab -2a +2b -3ab
6a -3ab -2a +2b -2ab
12xy -10x²y + 6x²y
-12xy +10x²y - 6x²y
12xy -10x²y + 6x²y
-12xy + 10x²y - 6x²y