Rozwiąż układy równań metodą przeciwnych współczynnkiów : {3u+2v=2 {5u+4v=6 {x-3y=5 {y+3x= -5 {5p-2r=21 {3p+5r=-6 {2x-3y=10 {5x+5y=0 {4x+5y=12,3 {3x-2y= -4 {3x-0,2y=35 {2,5x-5y=5

1){3u+2v=2/x(-2) {5u+4v=6 {-6u-4v=-4 {5u+4v=6 + ---------------- -u=2 {u=-2 {2v=2-3u {u=-2 {2v=2-(-6) {u=-2 {2v=8 u=-2 v=4

{3u+2v=2/*(-2) {5u+4v=6 {-6u-4v=-4 {5u+4v=6 -u=2 {u=-2 {v=4 {x-3y=5/*(-3) {y+3x= -5 {-3x+9y=-15 {y+3x=-5 10y= -20 {y=-2 {x=-1 {5p-2r=21/*5 {3p+5r=-6/*2 {25p-10r=105 {6p+10r=-12 31p=93 {p=3 {r=-3 {2x-3y=10/*(-5) {5x+5y=0/*2 {-10x+15y=-50 {10x+10y=0 25y= -50 {y=-2 {x=2 {4x+5y=12,3/*2 {3x-2y= -4/*5 {8x+10y=24,6 {15x-10y=-20 23x=4.6 {x=0.2 {y=2.3 {3x-0,2y=35/*50 {2,5x-5y=5/*(-2) {150x-10y=1750 {-5x+10y=-10 145x=1740 x=12 y=5