Question

x+100=300+400

Answer 1

x + 100 = 300 + 400

x + 100 = 700

x           = 700 - 100

x           = 600

Vậy x = 600

Answer 2

x + 100 = 300 + 400

x + 100 = 700

x          = 700 - 100

x          = 600

Answer 3

x+100=300+400

x+100=700

x        =700-100

x        =600

Answer 4

x+100=300+400

x+100=700

x=700-100

x=600