prosze o rozwiazanie rownania: 4x= -5y + 10 2x= 6y + 18 SPIĘTE JEST W KLAMRE! :D

{4x= -5y + 10 {2x= 6y + 18 {4x+5y=10 {2x-6y=18/*(-2) {4x+5y=10 {-4x+12y= -36 ----------------- 5y+12y=10-36 17y= -26/:17 y= -26/17 y= -1 9/17 4x+5y=10 4x+5*(-26/17)=10 4x-130/17=10 4x-7 11/17=10 4x=10+7 11/17 4x=17 11/17/:4 x=300/17 * 1/4 x=300/68 x=4  28/68 x= 4 7/17

{4x+5y=10 {2x-6y=18   /*(-2)    {4x+5y=10 + {-4x+12y=-36 ______________            17y=-26 /:17                y=-26/17 2x-6(-26/17)=18 2x+156/17=18 2x=18-9i3/17 2x=8i14/17     /:2 x=4i7/17 {x=4i7/17 {y=-1i 9/17