Odpowiedź:
- 1,8(2/9 - 0,5x) = 5/8(4x + 2,4)
- 18/10 * 2/9 + 1,8 * 0,5x = 5/8 * 4x + 5/8 * 24/10
- 2/5 * 1 + 0,9x = (5/2)x * 2x + 1 * 3/2
- 2/5 + 2,25x = 10x + 3/2
- 0,4 + 2,25x = 10x + 1,5
2,25x - 10x = 1,5 + 0,4
- 7,75x = 1,9
7,75x = - 1,9
x = - 1,9 : 7,75 = - 19/10 : 775/100 = - 19/10 * 100/775 = - 19 * 10/775 =
= - 190/775 = - 38/155