Question

Gi ải gấp giúp mình với ạ

Answer 1

c.

$2|3x+1|-5=3$

$2|3x+1|=8$

$|3x+1|=4$

$\Rightarrow 3x+1=4$ hoặc $3x+1=-4$

$\Rightarrow x=1$ hoặc $x=\frac{-5}{3}$

f.

$3|4x+3|-5=4$

$3|4x+3|=9$

$|4x+3|=3$

$\Rightarrow 4x+3=3$ hoặc $4x+3=-3$

$\Rightarrow x=0$ hoặc $x=\frac{-6}{4}=\frac{-3}{2}$

Answer 2

i.

$|2x+5|-\frac{1}{3}=\frac{2}{3}$

$|2x+5|=\frac{2}{3}+\frac{1}{3}=1$

$\Rightarrow 2x+5=1$ hoặc $2x+5=-1$

$\Rightarrow x=-2$ hoặc $x=-3$

n.

$\frac{1}{5}+2\frac{1}{3}|x+0,2|=\frac{8}{15}$

$\frac{7}{3}|x+0,2|=\frac{8}{15}-\frac{1}{5}=\frac{1}{3}$

$|x+0,2|=\frac{1}{3}: \frac{7}{3}=\frac{1}{7}$
$\Rightarrow x+0,2=\frac{1}{7}$ hoặc $x+0,2=\frac{-1}{7}$
$\Rightarrow x=\frac{-2}{35}$ hoặc $x=\frac{-12}{35}$

Answer 3

o.

$\frac{1}{5}+|\frac{3}{4}-x|=2023^0$

$\frac{1}{5}+|\frac{3}{4}-x|=1$

$|\frac{3}{4}-x|=1-\frac{1}{5}=\frac{4}{5}$

$\Rightarrow \frac{3}{4}-x=\frac{4}{5}$ hoặc $\frac{3}{4}-x=-\frac{4}{5}$

$\Rightarrow x=\frac{-1}{20}$ hoặc $x=\frac{31}{20}$