Question

TIM x , biet 

12 nhan X - 5⁴ : 5^{2  =} 35 

Answer 1

\(12.x-5^4\div5^2=35\)

\(12.x-5^2=35\)

\(12.x-25=35\)

            \(12.x=60\)

                   \(x=60\div12\)

                   \(x=5\)

Answer 2

Ta có:

\(12\times x-5^4:5^2=35\)

\(\Leftrightarrow12\times x-5^{4-2}=35\)

\(\Leftrightarrow12\times x-5^2=35\)

\(\Leftrightarrow12\times x-25=35\)

\(\Leftrightarrow12\times x=35+25\)

\(\Leftrightarrow12\times x=60\)

\(\Leftrightarrow x=60\div12\)

\(\Leftrightarrow x=5\)