CÓ:
-8X - 36 + 8X - 3 - X - 13 = 0
=> -X - 52 = 0
=> X = -52
\(-4\left(2x+9\right)-\left(-8x+3\right)-\left(x+13\right)=0\)
\(\Leftrightarrow-8x-36+8x-3-x-13=0\)
\(\Leftrightarrow-x-52=0\)
\(\Leftrightarrow-x=52\Rightarrow x=-52\)
\(-4\left(2x+9\right)-\left(-8x+3\right)-\left(x+13\right)=0\)
\(\Leftrightarrow-8x-36+8x-3-x-13=0\)
\(\Leftrightarrow\left(-36-3-13\right)+\left(8x-8x\right)=0\)
\(\Leftrightarrow\left(-39-13\right)+0=0\)
\(\Leftrightarrow-52+0=0\)
\(\Leftrightarrow-52=0-0\)
\(\Leftrightarrow-52=0\)
\(\Leftrightarrow x\in\left\{\varnothing\right\}\)
#Trần Việt Anh , đấy đâu phải ad , đấy là NCTK ( Box Toán - Văn )
