Question

[Thanh Trúc]

x + 256 = 300 

x + 752 = 800

x - 800 = 100

Answer 1

[Magic Super Power]

x + 256 = 300

x = 300 -256

x = 44

x + 752 = 800

x = 800 - 752

x = 48

x - 800 = 100

x = 100 + 800

x = 900.

Answer 2

[phamthiminhtrang]

x + 256 = 300

x          = 300 - 256

x          = 44

x + 752 = 800

x          = 800 - 752

x          = 48

x - 800 = 100

x         = 100 + 800

x         = 900