Question

[Pham Trong Bach]

Tìm x:

a) x - 306 = 504;

b) x + 254 = 680.

Answer 1

[Cao Minh Tâm]

a) x - 306 = 504

x = 504 + 306

x = 810

b) x + 254 = 680

x = 680 - 254

x = 426