Odpowiedzi

2010-03-18T21:06:47+01:00
2x-3/4=1/2+x
2x-x=3/4+1/2
x=10/8

2010-03-18T21:07:42+01:00
2x - 3/4 = 1/2 + x /x4
4 x 2x - 4 x 3/4 = 4 x 1/2 + 4 x x
8x - 3 = 2 + 4x
8x - 4x =2 + 3
4x = 5 /:4
x=5/4

x + 2/9 +x - 1/3 =1 / x9
9 x x + 9 x 2/9 + 9 x x - 9 x 1 = 9 x 1
9x + 2 + 9 - 9 = 9
9x + 2 = 9
9x = 9 - 2
9x = 7 / :9
x = 7/9