Tìm x 25-3. (6 - x) = 22

Bài 2 :Tìm x

a) 25-3. (6 - x) = 22

b) [(2x - 11) / 3 + 1] * 0.5 = 20

c) ((25 - 2x) ^ 3) / 5 - 3 ^ 2 = 4 ^ 2

d) 2.3 ^ x = 10.3 ^ 12 + 8.27 ^ 4