Răspuns :
a)
(x+1)/3 - 25/10 = x/2 / x 30
10(x+1) - 25*3 = 15x
10x + 10 - 75 = 15x
10x - 15x = 65
- 5x = 65
x = 65 : (-5)
x = - 13
b)
13-2x=7,5-x
13 - 7,5 = 2x - x
5,5 = x
x = 5,5
(x+1)/3 - 25/10 = x/2 / x 30
10(x+1) - 25*3 = 15x
10x + 10 - 75 = 15x
10x - 15x = 65
- 5x = 65
x = 65 : (-5)
x = - 13
b)
13-2x=7,5-x
13 - 7,5 = 2x - x
5,5 = x
x = 5,5