2x - 8 - 5x = -9

2x - 8 - 5x = -9 2x - 5x = -9 + 8 -3x = -1 /:(-3) x = ⅓ <- jedna trzecia:P

2x-5x=-1 -3x=-1 /3 -x=-1/3 x=1/3 1/3 to ułamek

2x - 8 -5x = -9 -3x - 8 = -9 |+8 -3x = -1 | :(-3) x = -1/3 x = 0.(3)