Question

Calcule o valor de x (URGENTEEE!!!!!)

Answer 1

Resposta:

$\sf \dfrac{2x}{4} - \dfrac{5}{7} = \dfrac{1}{6} \quad \gets \mbox {\sf o m.m.c \{ 4; 6; 7\} = 84 }$

$\sf \dfrac{42x}{84} - \dfrac{60}{84} = \dfrac{14}{84} \quad \gets \mbox{\sf cancela o denominador 84}$

$\sf 42x - 60 = 14$

$\sf 42x = 14 + 60$

$\sf 42x = 74$

$\sf x = \dfrac{74}{42}$

$\boxed { \boxed { \sf x = \dfrac{37}{21} }}$

Explicação passo-a-passo: