Lần sau bạn đăng đúng lớp nhé
\(a,\Rightarrow5\left(x-3\right)=25\Rightarrow x-3=5\Rightarrow x=8\\ b,\Rightarrow2x=4^2-10=6\Rightarrow x=3\\ c,\Rightarrow33+x=34\Rightarrow x=1\\ d,\Rightarrow18:x=10-1=9\Rightarrow x=2\\ e,\Rightarrow4x+8=100-64=32\Rightarrow4x=24\Rightarrow x=6\\ f,\Rightarrow x+1=3\Rightarrow x=4\\ g,\Rightarrow x-1=2\Rightarrow x=3\\ h,\Rightarrow x-3=4\Rightarrow x=7\\ i,\Rightarrow\left(2x+1\right)^2=49\Rightarrow2x+1=7\Rightarrow2x=6\Rightarrow x=3\\ j,\Rightarrow\left[{}\begin{matrix}x=5\\2x=9\end{matrix}\right.\Rightarrow\left[{}\begin{matrix}x=5\\x=\dfrac{9}{2}\end{matrix}\right.\\ k,\Rightarrow\left[{}\begin{matrix}3x=15\\x=5\end{matrix}\right.\Rightarrow x=5\)
