\(\frac{\left|x+2\right|}{15}=\frac{15}{\left|x+2\right|}\)

\(\Rightarrow\left|x+2\right|\left|x+2\right|=15^2\)

\(\Rightarrow\left|\left(x+2\right)^2\right|=15^2\)

\(\Rightarrow\left(x+2\right)^2=15^2\)

\(\Rightarrow\orbr{\begin{cases}x+2=15\\x+2=-15\end{cases}\Rightarrow\orbr{\begin{cases}x=13\\x=-17\end{cases}}}\)

X x 15 - X : 0,1 = 2

=> X x ( 15 - 10 ) = 2

=> X x 5     = 2

=> X           = 2 : 5

=> X           = 0,4

Hok tốt

|2 - x| - |x + 9| = 12

=> 2 - x - x - 9 = 12

=> -2x - 7 = 12

=> -2x = 19

=> x = -9,5

Ai l_i_k_e mình hên cả năm! Cảm ơn!Ai l_i_k_e mình hên cả năm! Cảm ơn!

thieu ma!

bn xem lai di

chua bao gio mk thay

bai nhu the nay dau

hinh nhu thieu de 

nhae bn

chuc bn hoc thiet gioi!

nha1

~~~~~~~~~~~~~~

ko thieu de ban oi,kho qua a

2x-15=4x+25

=>2x-4x=25+15

(2-4)x=40

-2x=40

x=40:(-2)

x=-20

bài này mình giải phương trình là được

2x-15=4x+25

2x-4x=15+25

-2x=40

x=-20

2.x-4.x=15+25

-2.x=40

x=(-20)

\(\dfrac{\left(4x-1\right)}{15}=\dfrac{\left(x+2\right)}{5}\)

\(\dfrac{\left(4x-1\right)}{15}-\dfrac{\left(x+2\right)}{5}=0\)

\(\dfrac{\left(4x-1\right)}{15}-\dfrac{3\left(x+2\right)}{3\times5}=0\)

\(\dfrac{4x-1}{15}-\dfrac{3x+6}{15}=0\)

\(4x-1-3x-6=0\)

\(x-7=0\)

\(x=7\)

\(\dfrac{4x-1}{15}=\dfrac{x+2}{5}\Rightarrow4x-1=\dfrac{15}{5}.\left(x+2\right)\)

\(\Rightarrow4x-1=3.\left(x+2\right)\)

\(\Rightarrow4x-1=3x+6\)

\(\Rightarrow x=7\)

\(\dfrac{4x-1}{15}=\dfrac{x+2}{5}\)

\(\Leftrightarrow\dfrac{4x-1}{15}=\dfrac{3\left(x+2\right)}{15}\)

\(\Leftrightarrow4x-1=3x+6\)

\(\Leftrightarrow4x-3x=6+1\)

\(\Leftrightarrow x=7\)

Vậy \(x=7\)