x + 50 = 80 + 60
x + 50 = 140
x = 140 - 50
x = 90
x+50 = 80+ 60
x+50= 140
x = 140 - 50
x = 90
\(x+50=80+60\)
\(x+50=140\)
\(x=140-50\)
\(x=90\)
k mk nha bn
thank you
x + 50=80+60
x + 50=140
x=140-50
x=110
nếu thấy mk đúng thì k cho mk nhé ^_^
x+50=80+60
x+50=140
x=140-50
x=90