Question

x+ 400 = 500 + 500

Answer 1

x + 400 = 500 +500

x + 400 = 1000

x = 1000 - 400

x = 600

Answer 2

x+400=1000

x=1000-400

x=600

Answer 3

X + 400 = 500 + 500

X + 400 = 1000

X          = 1000 - 400

X          = 6000

Answer 4

x+400=500+500

x+400=1000

x=1000-40

x=960

Answer 5

 nhầm, x=600

Answer 6

x + 400 = 500 + 500

x + 400 = 1000

x = 1000 - 400

x = 600

Answer 7

x + 400 = 500 + 500

x + 400 = 1000

x = 1000 - 400

x = 600

Vậy x = 600