1)uklady metoda algebraiczna a) {3x-y=2 {x+2y=3 b) {-3x+y=1 {4x-2y=2 c) {2x-y=5 {8x+2y=2 d) {x-2y=3 {y-2x=3 e) {-2x+y=-5 {3x-2y=7 f) {-2x-2y+-8 {x-2y=1 DAje duzo PROSZE

a) {3x-y=2 {x+2y=3 ==> x=3-2y {9-6y-y=2 {x=3-2y {7=7y => y=1 {x=3-2*1 {x=1 {y=1 b) {-3x+y=1 ==> y=1+3x {4x-2y=2 {y=1+3x {4x-2-6x=2 {y=1+3x {-2x=4 {y=1+3x {x=-2 {x=-2 {y=-5 c) {2x-y=5 ==> y=2x-5 {8x+2y=2 {y=2x-5 {8x+4x-10=2 {y=2x-5 {12x=12 {x=1 {y=2-5 {x=1 {y=-3 d) {x-2y=3 ==> x=3+2y {y-2x=3 {x=3+2y {y-6-4y=3 {x=3+2y {-3y=9 {x=3+2y {y=-3 {x=-3 {y=-3 e) {-2x+y=-5 ==> y=-5+2x {3x-2y=7 {3x+10-2x=7 {y=-5+2x {x=-3 {y=-11 f) {-2x-2y+-8 {x-2y=1 ==> x=1+2y {x=1+2y {-2-4y-2y=-8 {x=1+2y {-6y=-6 {x=3 {y=1