x + 80 = 200 - 100
x + 80 = 100
x = 100 - 80
x = 20
k mk nha , năn nỉ đó
x + 80 =200-100
x + 80 =100
x =100-80
x =20
x+80=200-100
x+80=100
x=100-80
x=20
Vậy x= 20
\(x+80=200-100\)
\(x+80=100\)
\(x=100-80\)
\(x=20\)
x + 80 = 200 - 100
x + 80 = 100
x = 100 - 80
x = 20
x + 80 = 200 - 100
x + 80 = 100
x = 100 - 80
x = 20