Question

#HuyenumemonAnh

Answer 1

a. Gọi số đó là x, ta có:

\(16\%.x=35\Rightarrow x=\dfrac{35}{16\%}=\dfrac{875}{4}\)

b. 

\(\left|a+2\right|=3\Rightarrow\left[{}\begin{matrix}a+2=3\\a+2=-3\end{matrix}\right.\) \(\Rightarrow\left[{}\begin{matrix}a=1\\a=-5\end{matrix}\right.\)