Tìm x

bài 19: tìm x

a) 5 . ( x - 7 ) = 0

b) 25 ( x - 4 ) = 0

c) ( 34 - 2x ) . ( 2x - 6 ) = 0

d) ( 2019 - x ) . ( 3x - 12 ) 0

e) 57 . ( 9x - 27 ) = 0

f) 25 + ( 15 - x ) = 30

g) 43 - ( 24 - x ) = 20

h) 2 . ( x - 5 ) - 17 = 25

i) 3 . ( x + 7 ) - 15 = 27

j) 15 + 4 . ( x - 2 ) = 95

k) 20 - ( x + 14 ) = 5

l) 14 + 3 . ( 5 - x ) = 27