Odpowiedzi

2010-02-02T15:29:14+01:00
⅗d-[(⅘d-⅓)+⁵/₃)=⅗d-⅘d+⅓-⁵/₃=-⅕d-⁴/₃=-⅕d-1⅓

[(7x-4)-(5x+8)]+9=7x-4-5x-8+9=2x-3
2010-02-02T15:30:19+01:00
3/5 d - ((4/5 d - 1/3) + 5/3)=3/5d-4/5d+1/3-5/3=-1/5d-4/3

((7x - 4) - (5x + 8)) + 9=7x-4-5x-8+9=2x-3