\(40\div\left(40-3x\right)=4\)
\(40-3x=40\div4\)
\(40-3x=10\)
\(3x=40-10\)
\(3x=30\)
\(x=30\div3\)
\(x=10\)
\(\text{Chúc bạn học tốt k cho mình nhé!}\)
40:(40-3x)=4
=>40-3x=40:4
=>40-3x=10
=>3x=40-10
=>3x=30
=>x=30:3
=>x=10
40:(40-3x)=4
=>40-3x=40:4
=>40-3x=10
=>3x=40-10
=>3x=30
=>x=30:3
=>x=10
40:(40-3x)=4
=>40-3x=40:4
=>40-3x=10
=>3x=40-10
=>3x=30
=>x=30:3
=>x=10
40:(40-3x)=4
=>40-3x=40:4
=>40-3x=10
=>3x=40-10
=>3x=30
=>x=30:3
=>x=10