Đáp án:
Xin cho hay nhất
Giải thích các bước giải:
1,
`32/27+(3x-7/9)^3=24/27`
⇔`(3x-7/9)^3=-8/27`
⇔`(3x-7/9)^3=(-2/3)^3`
⇔`3x-7/9=-2/3`
⇔`3x=1/9`
⇔`x=1/27`
2,
`|x|-1/2=3/4`
⇔`|x|=3/4+1/2`
⇔`|x|=5/4`
⇒\(\left[ \begin{array}{l}x=5/4\\x=-5/4\end{array} \right.\)
3,
`|2x-1/3|+5/6=1`
⇔`|2x-1/3|=1/6`
⇔\(\left[ \begin{array}{l}2x-1/3=1/6\\2x-2/3=-1/6\end{array} \right.\)
⇔\(\left[ \begin{array}{l}x=1/4\\x=1/12\end{array} \right.\)