Question

x + 500 = 600 + 900

Answer 1

x + 500 = 600 + 900

x + 500 =1500

x=1500-500

x=1000

Answer 2

x + 500 = 600 + 900

x + 500 = 1400

=> x = 900

Answer 3

x+500=600+900

Answer 4

x + 500 = 600 + 900

x + 500 = 1400

x          = 1400 - 500

x          = 900