\(y\times25+2015=12340\)
\(y\times25=12340-2015\)
\(y\times25=10325\)
\(y=413\)
y x 25=12340-2015
y x 25=10325
y=10325:25
y=413
\(y.25+2015=12340\\ \Leftrightarrow25y=10325\\ \Leftrightarrow y=413\)
y x 25 + 2015 = 12340
y x 25 = 12340 - 2015
y x 25 = 10325
y = 10325 : 25
y = 413
vậy y = 413
y.25+2015=12340
⇔y.25=12340-2015
⇔y,25=10325
⇔y=10325:25
⇒y= 413
vậy .............
