prosze o pomoc równanie 3x-4=2y-5 3y-9=x+3 x=y+1 2x=5x-4y HELP PROSZE O POMOC !!!!!!!!!!!!!!

Pierwsze: 3x - 4 = 2y - 5 / + 4 3y - 9 = x + 3 / + 9 3x = 2y - 1 3y = x + 12 / - x 3x = 2y - 1 3y - x = 12 / - 3y 3x = 2y - 1 / × 3 -x = 12 - 3y / × 2 9x = 6y - 3 -2x = 24 - 6y 7x = 21 x = 3 27 = 6y - 3 / + 3 30 = 6y / ÷ 6 y = 5 Drugie: x = y + 1 2x = 5x - 4y / - 5x x = y + 1 / × 4 -3x = -4y 4x = 4y + 4 -3x = -4y x = 4 16 = 4y + 4 / - 4 12 = 4y / ÷ 4 y = 3