Question

Dada a equação 5x/4 -3x-9/6 = 9/2, o valor de x correspondente é:

Answer 1

$\frac{5x}{4} -3x- \frac{9}{6} = \frac{9}{2}$
$\frac{5x}{4}-3x= \frac{9}{2} + \frac{9}{6}$
$\frac{5x}{4} - \frac{3x}{1}=\frac{9}{2} + \frac{9}{6}$

2,4,6 | 2
1,2,3 | 2     ---->2.2.3=12
1,1,3 | 3
1,1,1 

$\frac{15x-36x}{12}= \frac{54+18}{12}$

$15x-36x=54+18 -21x=72$
$x=- \frac{72}{21}$
$x=- \frac{24}{7}$