Răspuns:
Explicație pas cu pas:
3(2x + 1)/7 - (2x + 10)/6 = (2x - 2)/7 - 5(2x + 2)/28
3(2x + 1)/7 - (2x - 2)/7 = 2(x + 5)/6 - 5*2(x + 1)/28
(6x + 3 - 2x + 2)/7 = (x + 5)/3 - 5(x + 1)/14
(4x + 5)/7 + 5(x + 1)/14 = (x + 5)/3
2(4x + 5)/14 + 5(x + 1)/14 = (x + 5)/3
(8x + 10 + 5x + 5)/14 = (x + 5)/3
(13x + 15)/14 = (x + 5)/3
3(13x + 15) = 14(x + 5)
39x + 45 = 14x + 70
39x - 14x = 70 - 45
25x = 25
x = 25 : 25 = 1
