Question

Tìm x

25 +x .5 - 4³= 251

Answer 1

\(25+5x-4^3=251\)

\(\Rightarrow25+5x=315\)

\(\Rightarrow5x=315-25\)

\(\Rightarrow5x=290\)

\(\Rightarrow x=290:5=58\)

 

Answer 2

\(25+x.5-4^3=251\)

\(\Rightarrow25+x.5-64=251\)

\(\Rightarrow x.5=251+64-25\)

\(\Rightarrow x.5=290\)

\(\Rightarrow x=58\)

Vậy \(x=58\)