Respostas

  • Usuário do Brainly
2014-08-23T23:16:01-03:00
Vamos chamar as parcelas de a,b e c.

Assim, a+b+c=297.

Além disso, a=\dfrac{b}{2} e b=\dfrac{c}{3}. Deste modo, a=\dfrac{\dfrac{c}{3}}{2}=\dfrac{c}{6}.

Logo:

\dfrac{c}{6}+\dfrac{c}{3}+c=297

c+2c+6c=1~782~~\Rightarrow~~9c=1~782~~\Rightarrow~~\boxed{c=198}

Deste modo, a=\dfrac{198}{6}~\Rightarrow~\boxed{a=33} e b=\dfrac{198}{3}~\Rightarrow~\boxed{b=66}.

As parcelas são 33,66 e 198.
2014-08-23T23:18:30-03:00
3 parcelas=x
x/3
x= 1/2 de x/3=x/6
297
x/3 +x+x/6=297 mmc(6)
2x+6x+x=1782
9x=1782
x=1782/9
x=198
198/3=66
66/2=33
1parcela=198,2parcelas=33,3parcelas=66