Toán 25%.|2.x+1|-2 $\frac{3}{7}$ =5 $\frac{4}{7}$ 10/10/2021 By Isabelle 25%.|2.x+1|-2 $\frac{3}{7}$ =5 $\frac{4}{7}$
$0,25|2x+1|-\frac{17}{7}=\frac{39}{7}$ $\Leftrightarrow 0,25|2x+1|= 8$ $\Leftrightarrow |2x+1|=32$ $\Leftrightarrow 2x+1=\pm 32$ $\Leftrightarrow x=\frac{31}{2}; x=\frac{-33}{2}$ Trả lời
$0,25|2x+1|-\frac{17}{7}=\frac{39}{7}$
$\Leftrightarrow 0,25|2x+1|= 8$
$\Leftrightarrow |2x+1|=32$
$\Leftrightarrow 2x+1=\pm 32$
$\Leftrightarrow x=\frac{31}{2}; x=\frac{-33}{2}$
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