y + 49,5 + y = 7896
<=> 2y + 49,5 = 7896
<=> 2y = 7896 - 49,5
<=> 2y = 7846.5
<=> y = 3923.25
y+49,5+y=7896
y mũ hai + 49,5=7896
y mũ hai = 7896-49,5
y mũ hai =7846,5
y = 7846,5 : 2
y =3923,25
\(y+49,5+y=7896\)
\(y+y=7896-49,5\)
\(2\times y=7856,5\)
\(y=7865,5:2\)
\(y=3923,25\)
Học tốt
y+49,5+y=7896
2y +49,5 =7896
2y =7896-49,5
2y =7846,5
y =7846,5:2
y =3923,25
y + 49,5 + y = 7896
<=> 2y + 49,5 = 7896
<=> 2y = 7896 - 49,5
<=> 2y = 7846.5
<=> y = 3923,25
\(y+49,5+y=7896\)
\(\Leftrightarrow2y=7896-49,5=7846,5\)
\(\Leftrightarrow y=3923,25\)