• Matéria: Matemática
  • Autor: ars345
  • Perguntado 9 anos atrás

Localize a raiz da equação :()

Anexos:

ars345: respostas
ars345: -9; -2

Respostas

respondido por: Niiya
1
\dfrac{5}{9}\cdot x+1=\dfrac{1}{3}\cdot x - 1\\\\\\\dfrac{5}{9}\cdot x-\dfrac{1}{3}\cdot x=-1-1\\\\\\\dfrac{5}{9}\cdot x-\dfrac{1}{3}\cdot x=-2

O m.m.c entre 3 e 9 é 9. Multiplicando todos os membros da equação por 9:

9\cdot\dfrac{5}{9}\cdot x-9\cdot\dfrac{1}{3}\cdot x=9\cdot(-2)\\\\\\5x-3x=-18\\\\2x=-28\\\\\\x=\dfrac{-18}{2}\\\\\\\boxed{\boxed{x=-9}}
__________________

\dfrac{5}{6}x + 2 = \dfrac{1}{3}x+1\\\\\\\dfrac{5}{6}x-\dfrac{1}{3}x=1-2\\\\\\\dfrac{5}{6}x-\dfrac{1}{3}x=-1

O m.m.c entre 6 e 3 é 6
Multiplicando todos os membros por 6:

6\cdot\dfrac{5}{6}x-6\cdot\dfrac{1}{3}x=6\cdot(-1)\\\\\\5x-2x=-6\\\\3x=-6\\\\\\x=\dfrac{-6}{3}\\\\\\\boxed{\boxed{x=-2}}

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