zad.1.oblicz -12+5-8y=40 -4,2z-8+10,2z=16 z gory dziekuje

-12+5-8y=40 -7-8y=40 /+7 -8y=47 /:8 -x=5,875 /*(-1) x=-5,875 -4,2z-8+10,2z=16 6z-8=16 /+8 6z=24 /:6 x=4 ;))

-8y=40+12-5 -8y=47/:(-8) y=-5,8 6z=16+8 6z=24/:6 z=4 proszęę :)

-12+5-8y=40 -8y=40+12-5 -8y=47/;(-8) y=-5,875 -4,2z-8+10,2z=16 -4,2z+10,2z=16+8 6z=24/;6 z=4