Question

giúp mk vs !!!

 

Answer 1

\(\left(-2x+32\right)5=180\\ -10x+160=180\\ -10x=20\\ x=-2\)

Answer 2

\(\dfrac{-2x+32}{20}=\dfrac{36}{20}\\ \Rightarrow\dfrac{-2}{20}.\dfrac{x}{20}+\dfrac{32}{20}=\dfrac{36}{20}\\ \Rightarrow\dfrac{-2}{20}.\dfrac{x}{20}=\dfrac{4}{20}\\ \Rightarrow\dfrac{x}{20}=\dfrac{2}{20}\Rightarrow x.20=20.-2=40\\ \Rightarrow x=-40:20=-2\)