(14х+8)/4 - (2х+7)/3 = 3х
(14х + 8) · 3 - (2х + 7) · 4 = 3х · 4 · 3
42х + 24 - 8х - 28 = 36х
34х - 4 = 36х
34х - 36х = 4
-2х = 4
х = 4 : (-2)
х = -2
- - - - - - - - - - - - - - - - - - - - - - - - - - -
Проверка: (-28+8)/4 - (-4+7)/3 = -6
-5 - 1 = -6
-6 = -6 - верно
(14х+8)/4 - (2х+7)/3 = 3х
(14х + 8) · 3 - (2х + 7) · 4 = 3х · 4 · 3
42х + 24 - 8х - 28 = 36х
34х - 4 = 36х
34х - 36х = 4
-2х = 4
х = 4 : (-2)
х = -2
- - - - - - - - - - - - - - - - - - - - - - - - - - -
Проверка: (-28+8)/4 - (-4+7)/3 = -6
-5 - 1 = -6
-6 = -6 - верно