Giúp vs ạ HELP ME :)))))

` \color{#0074D9}{B}\color{#0088DD}{n}\color{#3399FF}{g}\color{#66AAFF}{o}\color{#99CCFF}{c} `

$\dfrac{x-3}{4}$ + $\dfrac{5x + 1}{6}$ = $\dfrac{5}{12}$

`<=>`$\dfrac{3(x-3)}{12}$ + $\dfrac{2(5x +1)}{12}$ = $\dfrac{5}{12}$

`<=>`$\dfrac{3x -9}{12}$ + $\dfrac{10x + 2}{12}$ = $\dfrac{5}{12}$

`<=>`$\dfrac{3x - 9 + 10x + 2}{12}$ = $\dfrac{5}{12}$

`<=>`` 3x - 9 + 10x + 2 = 5 `

`<=>`` 13x -7 = 5 `

`<=>`` 13x = 12 `

`<=>`` x ` = $\dfrac{12}{13}$

Vậy ` x ` = $\dfrac{12}{13}$