Răspuns:
Explicație pas cu pas:
Buna!
[tex]\bf a)~~~ \bf \!{^{^{^{^{^{^{\displaystyle\bf4 )}}}}}}}\!\!\!\dfrac{8}{9}=\dfrac{32}{36}[/tex]
[tex]\it~~~[/tex]
[tex]\bf b)~~~ \bf \!{^{^{^{^{^{^{\displaystyle\bf 12 )}}}}}}}\!\!\!\dfrac{8}{9}=\dfrac{96}{108}[/tex]
[tex]\it~~~[/tex]
[tex]\bf c)~~~ \bf \!{^{^{^{^{^{^{\displaystyle\bf n )}}}}}}}\!\!\!\dfrac{8}{9}=\dfrac{8n}{9n}[/tex]
[tex]\it~~[/tex]
[tex]\bf d)~~~ \bf \!{^{^{^{^{^{^{\displaystyle\bf 2n)}}}}}}}\!\!\!\dfrac{8}{9}=\dfrac{16n}{18n}[/tex]
[tex]\it~~~[/tex]
==pav38==