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Daca 12+3b/18+2a=0,(6),atunci a/b=

Răspuns :

Mister7
[tex] \frac{12+3b}{18+2a} = \frac{2}{3} [/tex]
[tex] \frac{3(4+b)}{2(9+a)} = \frac{2}{3} [/tex]
[tex]4(9+a)=9(4+b)[/tex]
[tex]36+4a=36+9b[/tex]
[tex]4a=9b[/tex]
[tex] \frac{a}{b} = \frac{9}{4} [/tex]

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