Rozwiąż równania 2x+5=-3x+15= 5x i jedna piąta = trzy ósme 4x-8=2x-2=

2x+5=-3x+15 2x + 3x = 15 - 5 5x = 10 x = 2 5x 1/5 = 3/8 1/5 = 8/40 38 = 15/40 5x 8/40 = 15/40 5x = 15/40 - 8/40 5x = 7/40 4x - 8 = 2x - 2 4x - 2x = 8 - 2 2x = 6 x = 3