A, (X – 3412) × 3 = 45789 B, 51264 – X = 19992

Câu 1: Tìm x:

a, (x – 3412) × 3 = 45789 b, 51264 – x = 19992 : 7

c, (x + 3478) : 2 = 78632 d, 28694 – x × 2 = 7658