Đáp án + Giải thích các bước giải:
`6/3:x=|-4/3|`
`=>2:x=4/3`
`=>x=3/2`
`---------`
`0,6x=-|6/5|`
`=>3/5x=-6/5`
`=>x=-2`
`x-|4/5|=|-9/7|`
`=>x-4/5=9/7`
`=>x=73/35`
`(x+3/2)^2=9/49`
`=>` \(\left[ \begin{array}{l}x+\dfrac{3}{2}=\dfrac{3}{7}\\x+\dfrac{3}{2}=-\dfrac{3}{7}\end{array} \right.\)
`=>` \(\left[ \begin{array}{l}x=-\dfrac{15}{14}\\x=-\dfrac{27}{14}\end{array} \right.\)
Vậy `x∈{-15/14;-27/14}`
a)
$\frac{6}{3}:x=|-\frac{4}{3}|$
$\frac{6}{3}:x=\frac{4}{3}$
$x=\frac{6}{3}:\frac{4}{3}$
$x=1,5$
b)
$0,6.x=-|\frac{6}{5}|$
$0,6.x=-\frac{6}{5}$
$x=-\frac{6}{5}:0,6$
$x=-2$
c)
$x-|\frac{4}{5}|=|-\frac{9}{7}|$
$x-\frac{4}{5}=\frac{9}{7}$
$x=\frac{73}{35}$
d)
$(x+\frac{3}{2})^2=\frac{9}{49}$
$(x+\frac{3}{2})^2=(\frac{3}{7})^2$
$x+\frac{3}{2}=±\frac{3}{7}$
$x+\frac{3}{2}=\frac{3}{7}$ hoặc $x+\frac{3}{2}=-\frac{3}{7}$
$x=-\frac{15}{14}$ $x$=-27/14
xin hay nhất ạ
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