Question

por favor, me ajudem na letra d pois estou com dificuldade no número misto (não sei se devo cancelar o seis) e na soma de x+1/2

Answer 1

Oiiii

D)

$\frac{2x-4}{5}-6 \frac{1}{6} = \frac{20-x}{4} - \frac{x+ \frac{1}{2} }{3}$

$\frac{2(x-2)}{5}-6 \frac{1}{6} = \frac{20-x}{4} - \frac{x+ \frac{1}{2} }{3}$

usando a regra a b/c = ac+b/c

$\frac{2(x-2)}{5}-\frac{6.6+1}{6} = \frac{20-x}{4} - \frac{x+ \frac{1}{2} }{3}$

$\frac{2(x-2)}{5}-\frac{37}{6} = \frac{20-x}{4} - \frac{x+ \frac{1}{2} }{3}$

$\frac{2(x-2)}{5}-\frac{37}{6} = \frac{20-x}{4} - \frac{x}{3} - \frac{ \frac{1}{2} }{3}$

$\frac{2(x-2)}{5}-\frac{37}{6} = \frac{20-x}{4} - \frac{x}{3} - \frac{ 1 }{2.3}$

$\frac{2(x-2)}{5}-\frac{37}{6} = \frac{20-x}{4} - \frac{x}{3} - \frac{ 1 }{6} (mmc)$

$24(x-2)-370=15(20-x)-20x-10$

$24x-48-370=300-15x-20x-10(separar)$

$24x+15x+20x=300-10+48+370$

$59x=708$

$x = \frac{708}{59}$

$\boxed{\boxed{x=\boxed{12}}}$