Đáp án:
Giải thích các bước giải:
`(x+1)/12`=`-3/8`
`((x+1).2)/24`=`-9/24`
(x+1).2 = -9
x+1=-4,5
x=-4,5-1
x=-5,5
$\frac{x+1}{12}$ = $\frac{-3}{8}$
\(x+1\) . $\frac{2}{24}$ = $\frac{-9}{24}$
⇒ \(x+1\) = \(-4,5\)
⇒ \(x\) = \(-4,5\) - \(1\)
⇒ \(x\) = \(5,5\)
\(Vậy\) \(x\)= \(5,5\)
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