Câu hỏi của Nguyễn Thanh Thảo

Question

gải phương trình$\dfrac{x-1}{2}-\dfrac{x+1}{15}-\dfrac{2x-13}{6}=0$

Trần Phan Thanh Thảo · Accepted Answer

$\dfrac{x-1}{2}-\dfrac{x+1}{15}-\dfrac{2x-13}{6}=0$

$\Rightarrow\dfrac{15\left(x-1\right)-2\left(x+1\right)-5\left(2x-13\right)}{30}=0$

$\Rightarrow15\left(x-1\right)-2\left(x+1\right)-5\left(2x-13\right)=0$

$\Rightarrow15x-15-2x-2-10x+65=0$

$\Rightarrow3x-48=0$

$\Rightarrow3x=48\Rightarrow x=16$

Chúc bạn học tốt!Câu trả lời: $\dfrac{x-1}{2}-\dfrac{x+1}{15}-\dfrac{2x-13}{6}=0$

$\Rightarrow\dfrac{15\left(x-1\right)-2\left(x+1\right)-5\left(2x-13\right)}{30}=0$

$\Rightarrow15\left(x-1\right)-2\left(x+1\right)-5\left(2x-13\right)=0$

$\Rightarrow15x-15-2x-2-10x+65=0$

$\Rightarrow3x-48=0$

$\Rightarrow3x=48\Rightarrow x=16$

Chúc bạn học tốt!

Huyền Anh Kute · Answer

Bài Làm:

$\dfrac{x-1}{2}-\dfrac{x+1}{15}-\dfrac{2x-13}{6}=0$

$\Leftrightarrow$$15\left(x-1\right)-2\left(x+1\right)-5\left(2x-13\right)=0$

$\Leftrightarrow15x-15-2x-2-10x+65=0$

$\Leftrightarrow15x-2x-10x=15+2-65$

$\Leftrightarrow3x=-48$

$\Leftrightarrow x=-16$

Vậy $x=-16$.

$S=\left\{-16\right\}$

Chúc pạn hok tốt!!!Câu trả lời: Bài Làm:

$\dfrac{x-1}{2}-\dfrac{x+1}{15}-\dfrac{2x-13}{6}=0$

$\Leftrightarrow$$15\left(x-1\right)-2\left(x+1\right)-5\left(2x-13\right)=0$

$\Leftrightarrow15x-15-2x-2-10x+65=0$

$\Leftrightarrow15x-2x-10x=15+2-65$

$\Leftrightarrow3x=-48$

$\Leftrightarrow x=-16$

Vậy $x=-16$.

$S=\left\{-16\right\}$

Chúc pạn hok tốt!!!

Bài 4: Phương trình tích