Решите уравнение:
а) 11x − 4x = 14;
б) 20x − 13x − 12x = 6;
в) 9x + 4x = −26;
г) 11x + 7x − 24x = 42.
11x − 4x = 14
7x = 14
$x = \frac{14}{7}$
x = 2
20x − 13x − 12x = 6
−5x = 6
$x = -\frac{6}{5}$
x = −1,2
9x + 4x = −26
13x = −26
$x = -\frac{26}{13}$
x = −2
11x + 7x − 24x = 42
−6x = 42
$x = -\frac{42}{6}$
x = −7