\(\Leftrightarrow5x=1355+270\Leftrightarrow5x=1625\Leftrightarrow x=325\)
\(x5-270=1355\\ x5=1355+270\\ x5=1625\\ x=1625:5\\ x=325\)
X x 5 - 270 = 1355
X x 5 = 1355 + 270
X x 5 = 1625
X = 1625 : 5
X = 325
X x 5 - 270 = 1355
X x 5 = 1355 + 270
X x 5 = 1625
X = 1625 : 5
X = 325
\(5x-270=1355\)
\(\Leftrightarrow5x=1355+270\)
\(\Leftrightarrow5x=1625\)
\(\Leftrightarrow x=1625:5\)
\(\Leftrightarrow x=325\)