A) 467 + X = 877 - 162 B) X – 214 = 61 + 345

Câu 6. Tìm x, biết: a) 467 + x = 877 - 162 b) x – 214 = 61 + 345 ... c) x : 5 = 10 × 2 d) x × 4 = 30 – 10