Răspuns:[tex]\blue{\Large \boxed{\bf \dfrac{a}{b} = \dfrac{2}{3}}}[/tex]
Explicație pas cu pas:
3a = 2b
b ≠ 0
[tex]\large \bf~~ \!{^{^{^{^{^{\displaystyle 2)}}}}}}\!\!\!\dfrac{a}{b} = \dfrac{2a}{2b} = \bigg(\dfrac{2a}{3a}\bigg)^{(a} \implies \red{\boxed{\bf \dfrac{a}{b} = \dfrac{2}{3}}}[/tex]
Varianta d)
Bafta multa!
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