Odpowiedź:
a)
[tex]0,2x = 1 |:0,2\\x = 5[/tex]
b)
[tex]-0,4x= -\frac{3}{5} \\x = -\frac{3}{5} : -0,4 \\x = 1,5[/tex]
c)
[tex]0,5 = -\frac{2}{3} x |:-\frac{2}{3}\\x = \frac{5}{10} * -\frac{3}{2} \\x = - \frac{15}{20} = -\frac{3}{4}[/tex]
