Question

Preciso de ajuda na execução dessa equação. Por favor!

Answer 1

$\cfrac{x-5}{2} - \cfrac{x}{3} = \cfrac{1}{3} - \cfrac{3x \div 14}{12} \\\\\\\cfrac{3(x-5)}{3 \cdot 2} - \cfrac{2x}{2 \cdot 3} - \cfrac{2 \cdot 1}{2 \cdot 3} = - \cfrac{\cfrac{3x}{14} }{\cfrac{12}{1} }\\\\\\\cfrac{3x - 15}{6} - \cfrac{2x}{6} - \cfrac{2}{6} = -\cfrac{3x}{14} \cdot \cfrac{1}{12} \\\\\\\cfrac{3x - 15 - 2x - 2}{6} = -\cfrac{x}{56} \\\\\\\cfrac{x - 17}{6} = -\cfrac{x}{56}\\\\\\-56(x - 17) = 6x\\-28(x - 17) = 3x\\-28x + 476 = 3x\\31x = 476\\x = \cfrac{476}{31}$

Answer 2

Resposta:

≅15,35.

Explicação passo a passo:

1º vamos resolver a divisão 3x : 14/12

12 . 3x /14 . 12

36x/168

x /168 : 3

x /56.

Então, teremos:

x - 5/2 - x/3 = 1/3 - x/56

Igualando os denominadores:

84x - 420 - 56x = 56 - 3x

84x - 56x + 3x = 56 + 420

28x + 3x = 476

31x = 476  

31x = 476

x = 476 : 31

x = 15,35...