Question

[Pham Trong Bach]

Tìm x, biết:

a) x - 280: 35 - 5.54;

b) ( x - 120) : 35 = 5;

c) (x + 100). 4 = 800;

d) x . 5 + 10.9 = 990

Answer 1

[Cao Minh Tâm]

a) x = 278.           

b) x = 295.          

c) x = 100.           

d) x = 180.