8x+6y=258 x+6 y=258x+6y=25
8x−6y+25=08 x-6 y+25=08x−6y+25=0
6x−8y+25=06 x-8 y+25=06x−8y+25=0
6x+8y=256 x+8 y=256x+8y=25