x+300=600+100
x+300=700
x=700-300
x=400
x + 300 = 600 + 100
x + 300 = 700
x = 700 - 300
x = 400 ai k mk,mk k lại
x + 300 = 600 + 100
x + 300 = 700
x = 700 - 300
x = 400
K mk nha
x + 300 = 700
x = 700 - 300
x = 400
x + 300 = 600 + 100
x + 300 = 700
x = 700 - 400
x = 300
x + 300 = 600 + 100
x + 300 = 700
x = 700 - 300 = 400
vậy x = 400 , nhớ k nha
x + 300 = 600 + 100
x + 300 = 700
x = 700 - 300
x = 400
x+300=600+100
x+300=700
x=700-300
x=400
tk mk nha
x + 300 = 600 + 100
x + 300 = 700
x = 700 - 300
x = 400
ai tk mk mk thanks nhu ^_^
\(x+300=600+100\)
\(x+300=700\)
\(x=700-300\)
\(x=400\)
Vậy x=400
x + 300 = 600 + 100
x + 300 = 700
x = 700 - 300
x = 400
k mk nhé
x+300=600+100
x+300=700
x =700-300
x =400.
x + 300 = 600 + 100
x + 300 = 700
x = 700 - 300
x = 400
ai tôi tôi tk lại ^^
x+300=600+100
x+300=700
x=700-300
x=400
x + 300 = 600 + 100
x + 300 = 700
x = 700 - 300
x = 400
làm đi bạn:x+300=600+100
x+300=700
x =700-300
x =500