Kết quả sẽ là 85,75 đó bn! Mk nghĩ là kết quả phải là số nguyên chứ!?
\(2x-\left(67+34\right):2=121\)
\(2x-101:2=121\)
\(2x-50,5=121\)
\(2x=121+50,5\)
\(2x=171,5\)
\(x=171,5:2\)
\(x=85,75\)
\(2\cdot x-\left(67+34\right):2=121\)
\(2\cdot x-101:2=121\)
\(2\cdot x-\dfrac{101}{2}=121\)
\(2\cdot x=121+\dfrac{101}{2}\)
\(2\cdot x=\dfrac{343}{2}\)
\(x=\dfrac{343}{2}:2\)
\(x=\dfrac{343}{4}\)
Vậy \(x=\dfrac{343}{4}\).
Ta có: \(2x-\left(67+34\right):2=121\)
<=> \(2x-\dfrac{101}{2}=121\)
<=> \(2\left(x-\dfrac{101}{4}\right)=121\)
<=> \(x-\dfrac{101}{4}=\dfrac{121}{2}\)
<=> \(x=\dfrac{121}{2}+\dfrac{101}{4}\)
<=> \(x=\dfrac{343}{4}=85,75\)
Vậy x = 85,75
\(2\)\(x\) \(-\) \((\) \(67+34\) \()\) \(\div\) \(2\) \(=\) \(121\)
\(2\)\(x\) \(-\) \(101\) \(\div\) \(2\) \(=\) \(121\)
\(2\)\(x\) \(-\) \(50,5\) \(=\) \(121\)
\(2x\) \(=\) \(121+50,5\)
\(2x\) \(=\) \(171,5\)
\(x\) \(=\) \(171,5\div2\)
\(x\) \(=\) \(85,75\)
