a) \(2x-138=2^3.3^2\)
\(\Rightarrow2x-138=72\)
\(\Rightarrow2x=210\)
\(\Rightarrow x=105\)
b) \(231-\left(x-6\right)=1339:13\)
\(\Rightarrow231-\left(x-6\right)=103\)
\(\Rightarrow x-6=110\)
\(\Rightarrow x=116\)
a) \(2.x-138=2^3.3^2\)
\(2.x-138=8.9\)
\(2.x-138=72\)
\(2x=72+138\)
\(2x=210\)
\(x=210:2\)
\(x=105\)
\(231-\left(x-6\right)=1339:13\)
\(231-\left(x-6\right)=103\)
\(x-6=231-103\)
\(x-6=128\)
\(x=128+6\)
\(x=134\)
\(2x-138=2^3.3^2\)
\(2x-138=8.9\)
\(2x-138=72\)
\(2x=72+138\)
\(2x=210\)
\(x=210:2\)
\(x=105\)
b)\(231-\left(x-6\right)=1339:13\)
\(231-\left(x-6\right)=103\)
\(\left(x-6\right)=231-103\)
\(\left(x-6\right)=128\)
\(x=128+6\)
\(x=134\)
T mk nhé bạn ^...^ ^_^