Odpowiedzi

2010-04-12T14:21:25+02:00
4x/3 +80/3 = x-20+ 2x/3 + 40/3

2x/3 - x = -20-40/3

2x-3x = -100

x= 100
Najlepsza Odpowiedź!
2010-04-12T14:23:20+02:00
4[1/3(x+20)] = (x-20) + 2/3(x+20)
4 [ ⅓x + ²⁰/₃] = x-20 + ⅔x + ⁴⁰/₃
⁴/₃x + ⁸⁰/₃ = x-20 + ⅔x + ⁴⁰/₃
1⅓x - x - ⅔x = -20 + 13 ⅓ - 26 ⅔
- ⅓ x = -40 ⅔ +13 ⅓
- ⅓ x = -27 ⅓ / * (-3)
x = - ⁸²/₃ * (-3)
x = 82