Răspuns:
1) y=3x
[tex]\frac{x}{y}[/tex] = [tex]\frac{x}{3x}[/tex] = [tex]\frac{1}{3}[/tex]
[tex]\frac{y}{x}[/tex] = [tex]\frac{3x}{x}[/tex] = 3
2) [tex]\frac{16}{27}[/tex] ireductibila
[tex]\frac{115}{0,2}[/tex] =115·[tex]\frac{10}{2}[/tex] = 115·5=575
3,(6)= [tex]\frac{36-3}{9}[/tex] = [tex]\frac{33}{9}[/tex]
0,(3)= [tex]\frac{3}{9}[/tex] = [tex]\frac{1}{3}[/tex]
[tex]\frac{33/9}{1/3}[/tex] = [tex]\frac{33}{9}[/tex] ·[tex]\frac{3}{1}[/tex] = [tex]\frac{99}{9}[/tex] = 11
Explicație pas cu pas: