|-4.8| = 4.8
|1.2| = 1.2
4.8-m*|5x-3| = 1.2
m*|5x-3| = 4.8-1.2 = 3.6
|5x-3| = 3.6/m
для 5x-3 >= 0, т.е. x >= 3/5
5x-3 = 3.6/m
x = (3+3.6/m) / 5 = 3
3+3.6/m = 15
3.6/m = 12
m = 3.6/12 = 0.3
|-4.8| = 4.8
|1.2| = 1.2
4.8-m*|5x-3| = 1.2
m*|5x-3| = 4.8-1.2 = 3.6
|5x-3| = 3.6/m
для 5x-3 >= 0, т.е. x >= 3/5
5x-3 = 3.6/m
x = (3+3.6/m) / 5 = 3
3+3.6/m = 15
3.6/m = 12
m = 3.6/12 = 0.3