{6x+2x=18 {2x-5y=-11 oraz {3/5x + 1/2=12 {x-1/2y=12 Pomoże ktoś rozwiązać? Z góry dziekuje!❤️

6x=-2y+18I:6 x=3-1/3y 2(3-1/3y)-5y=-11 6-2/3y-5y=-11 6-5 2/3y=-11 -17/3y=-17I*(-3/17) y=-3 x=3-1/3*(-3)=3-1=2 drugi przykład 3/5x+1/2y=12 x=1/2y+12 3/5(1/2y+12)+1/2y=12 8/10y=24/5I*10/8 y=6 X=1/2*6+12=15

6x+2y=18 2x-5y=-11  /*(-3) 6x + 2y = 18 -6x + 15y = 33 ----------------------- 6x + 2y - 6x + 15y = 18 + 33 6x - 6x + 2y + 15y = 51 17y = 51 y = 51 : 17 y = 3 6x + 2y = 18 6x + 2*3= 18 6x + 6 = 18 6x = 18 - 6 6x= 12 x= 12 : 6 x= 2 spr. 6x+2y=18 L= 6x + 2y = 6*2 + 2*3= 12 + 6 = 18 P= 18 18=18 L=P 3/5x + 1/2y=12 x-1/2y=12 ---------------- 3/5x + 1/2y +x - 1/2y = 12 +12 3/5x +x + 1/2y - 1/2y = 24 1 i 3/5x = 24 x= 24 : 1 i 3/5x x= 24 : 8/5 x= 24 * 5/8 x= 3 * 5/1 x= 15/1 x= 15 x-1/2y=12 15 - 1/2y = 12 - 1/2y = 12 - 15 - 1/2y = - 3 y = - 3 : (-1/2) y = - 3 * (-2/1) y = 6/1 y=6 spr. 3/5x + 1/2y=12 L= 3/5x + 1/2y= 3/5 * 15 + 1/2 * 6= 3/1 * 3 + 1/1 * 3= 9/1 + 3/1= 12/1= 12 P = 12 12=12 L=P