hasil pengurangan dari -2(x-3y+1) dan 4(2x+2y+3)

(-2(x-3y+1)) - (4(2x+2y+3))
= (-2x+6y-1) - (8x+8y+12)
= -2x-8x+6y-8y-1-12
= -10x-2y-13
______________kali -1
= 10x+2y+13