0,4(x − 3) − 1,6 = 5(0,1x − 0,5)
0,4x − 1,2 − 1,6 = 0,5x − 2,5
0,4x − 0,5x = −2,5 + 1,2 + 1,6
−0,1x = 0,3
x = 0,3 : (−0,1)
x = −3

1,5(2x − 5) + 2x = 5(0,5x − 1,5) − 10
3x − 7,5 + 2x = 2,5x − 7,5 − 10
3x + 2x − 2,5x = −7,5 − 10 + 7,5
2,5x = −10
x = −10 : 2,5
x = −4

$\frac{2}{3}(1\frac{1}{2}x + \frac{3}{5}) - \frac{4}{5}(\frac{5}{12}x - \frac{1}{2}) = 1\frac{3}{5}$
$\frac{2}{3}(\frac{3}{2}x + \frac{3}{5}) - \frac{4}{5}(\frac{5}{12}x - \frac{1}{2}) = \frac{8}{5}$
$x + \frac{2}{5} - \frac{1}{3}x + \frac{2}{5} = \frac{8}{5}$
$x - \frac{1}{3}x = \frac{8}{5} - \frac{2}{5} - \frac{2}{5}$
$\frac{2}{3}x = \frac{4}{5}$
$x = \frac{4}{5} : \frac{2}{3}$
$x = \frac{4}{5} * \frac{3}{2}$
$x = \frac{6}{5} = 1\frac{1}{5}$