Răspunsuri

2014-09-09T22:18:52+03:00
16x-3(x+1) = 5x
16x - 3x -3 = 5x
16x-5x = 3
11x = 3 / :11
x = 3/11

2. 2,5(x-4) -6x = 3-x
2,5x - 10 - 6x = 3-x
2,5 x -6 x + x = 3 + 10
-2,5 x = 13 / x (-1)
2,5x= - 13 / : 2,5
x= - 13/2,5 = 5,2

3. -3x-10=0
-3x = 10 / x (-1)
3x = -10 / : 3
x = - 10/3