Tìm x:

III. TÌM X
Bài 1: Tìm x:
a) 165 : x = 3
b) x – 71 = 129
c) 22 + x = 52d) 2x = 102
e) x + 19 = 301
f) 4x = 64
Bài 2: Tìm x:
a) 198 – (x + 4) = 120
b) 2(x- 51) = 2.23 + 20
c) 4(x – 3) = 72 – 110d) 200 – (2x + 6) = 43
e) 32(x + 4) – 52 = 5.22
f) 9x- 1 = 9