Odpowiedzi

Najlepsza Odpowiedź!
2010-03-05T18:54:55+01:00
A) ⅓ x - x = 2 +2
- ⅔x = 4
x = -6
b) -6/7x = 4/7 - 1 /:(-6/7)
x = 1/2
c) 3/2x - 12 = 18
3/2x = 18+12
x = 20
d) x/6 = 1 +1/6
x/6 = 7/6
x = 7
e) -4x +2 = x/3
-4x - x/3 = -2
- 13/3x = -2
x = 6/13
f) 6/5 - 2/5x = -2
-2/5x = -2 - 6/5
-2/5x = -16/5
x = 8
g) 3/2 - 9/4x = -6
-9/4x = -6 - 3/2
-9/4x = -15/2
x = 10/3
h) 1/5x - 3/5 = 9-x
1/5x + x = 9 + 3/5
6/5x = 48/5
x = 8