Question

-4(0,3k-0,4)+6(0,8k+0,2)=0

Answer 1

-4*0.3k-4*0.4+6*0.8k+6*0.2=0
-1.2k-4.4+ 4.8k+1.2=0
3.6k-3.2=0
3.6k=0+3.2
3.6k=3.2

Answer 2

3.2/3.6

Answer 3

=k=0.88