Question

[ha]

Cho a , b thuộc Z. Tìm x sao cho:
A,   x + a = 10                                                                B , a - x = 5

C , x + a = b                                                                 D , a - x = b

Answer 1

[Nguyễn Nhật Minh]

A, x +a = 10 => x = 10 -a

B, a -x =5 => x =a - 5

C, x+a = b => x =b-a

D, a -x =b => x = a-b

Answer 2

[vuducduy]

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