Question

16,877|х|+0,123|х|-405,4-5|х|=84;6

Answer 1

12*|x|-405,5=86,4
12*|x|=86,4+405,4
12*|x|=490
12x=490
12x=-490
x= 49012
x2= -49012
x1= 2456 
x2= -245,6