Odpowiedź:
3(0,2x + 2,5y) - 2(-4y-5x) - 6 = 0.6x+ 7.5y+8y+10x -6 = 10.6x+15.5y -6
0,6x + 7,5y + 8y + 10x - 6= 10,6x + 15,5y - 6