Proszę i rozwiązanie tego na dzisiaj. 14. e) {2x -y = 1 {x +2y = 13 f) {x+y = 10 {x-2y= -5 g) {6a - 7b = -5 {2a +5b = -9 h) {10s +20t=0 {s +1 =-1 15. b) {x-y=0 {2x+¼y = 2¼

e) {2x -y = 1 {x +2y = 13 /razy (-2) [2x-y=1 [-2x-4y=-26 stronami dodajesz -5y=-25- :(-5) y=5 [2x-y=1 [2x-5=1 2x=5-1 2x=6/ :2 x= 3 f) {x+y = 10 {x-2y= -5 /razy (-1) [x+y=10 [-x+2y=5 stronami dodajesz 3y=15 / :3 y=5 [x+y=10 [x+5=10 x=10-5 x=5 g) {6a - 7b = -5 {2a +5b = -9/* (-3) [6a-7b=-5 [-6a-15b=27 stronami dodajesz -22b=22 / :(-22) b=-1 6a-7razy(-1)-5 6a+7-5 6a=-5-7 6a=-12/ 6 a= -2