Rozwiąż układ równań c

5(2x+3)-2(3y-4)=3 (3x+2)/4-(y-3)/2=5 |*4 10x+15-6y+8=3 2x+2-2y+6=20 10x-6y=-20 2x-2y=12 |*-3 10x-6y=-20 -6x+6y=-36 ------------ 4x=-56 x=-14 10*(-14)-6y=-20 -140-6y=-20 -6y=-20+140 -6y=120 y=-20

a ) 5x = 7 * (6x +26) + 3 5x = 42x + 182 + 3 5x = 42 x + 185 5x - 42x = 185 -37x = 185 | :(-37) {x = -5 { y = 6 * (-5)+ 26 {x = -5 {y = -30 + 26 { x = -5 {y = -4