Question

x + 600 = 600 + 400

Answer 1

x +600 = 1000

       x = 1000 - 600

       x = 400

k nha

Answer 2

x + 600 = 600 + 400

x + 600 = 1000

x          = 1000 - 600

x          =    400

Answer 3

x + 600 = 600 + 400

x + 600 = 1000

x           = 1000 - 600

x           = 400

Answer 4

là 400 nha bạn

Answer 5

x+600=600+400

x+600=1000

        x=1000-600

        x=400

Answer 6

x+600=1000

x=1000-600

x=400

Answer 7

\(x+600=600+400\)

\(x+600=1000\)

              \(x=1000-600\)

              \(x=400\)