Ответ:
- \((39+x)-84=78\)
\(39+x=162\)
\(x=123\) - \((x-83)+316=425\)
\(x-83=109\)
\(x=192\) - \((600-x)-92=126\)
\(600-x=218\)
\(x=382\) - \(253-(x-459)=138\)
\(x-459=115\)
\(x=574\) - \(502-(217-x)=421\)
\(217-x=81\)
\(x=136\) - \(871-(x+157)=385\)
\(x+157=486\)
\(x=329\)
Ответ: 1) x = 123; 2) x = 192; 3) x = 382; 4) x = 574; 5) x = 136; 6) x = 329.
