A) X + 27 = 45 B) X - 27 = 45C) 45 - X = 27 D) 25 + X = 18 + 52

Câu 8. Tìm x:

a) x + 27 = 45

b) x - 27 = 45

c) 45 - x = 27

d) 25 + x = 18 + 52