Rozwiąż równania: 3x=5-12x+40+9x+4+2 7y-18+3y-28-5y-8y=2y -48x-216+72x-18x+420=-4x-208 Proszęę o pomoc.

3x=5-12x+40+9x+4+2 3x+12x-9x=5+40+4+2 6x=51/6 x=8,5 7y-18+3y-28-5y-8y=2y 7y+3y-5y-8y-2y=18+28 -5y=46/(-5) y=-9 i 1/5 -48x-216+72x-18x+420=-4x-208 -48x+72x-18x+4x=-208+216-420 10x=-412/10 x=41,2

3x+12x-9x=5+40+4+2 6x=51 ] :6 x=51/6=8½ 7y-18+3y-28-5y-8y=2y 7y+3y-5y-8y-2y=18+28 -5y=46 ]: (-5) y= -9⅕ -48x-216+72x-18x+420=-4x-208 -48x+72x-18x+4x=-208+216-420 10x=-412 ]:10 x=-41,2