Bài tập tìm x
Bài 1: Tìm x
a) x + 23 = 17
b) 3x + 15 = 0
c) (3x – 24).73 = 2.74
d) [(6x – 72):2 – 84].28 = 5628
i) 20 – [42 + (x – 6)] = 90
k) (x – 140):7 = 33 – 23.3
l) [(2x – 11) : 3 + 1].5 = 20
e) 5(x – 3)2 + 17 =142
f) (x + 3).(2x – 4) = 0
g) (x – 5).(3x – 6) = 0
m) 2.3x = 10.312 + 8.274
n) (38 - x)(x + 25) = 0
o) 3x + 1 + 3x + 2 = 324
a) x + 23 = 17
b) 3x + 15 = 0
c) (3x – 24).73 = 2.74
d) [(6x – 72):2 – 84].28 = 5628
i) 20 – [42 + (x – 6)] = 90
k) (x – 140):7 = 33 – 23.3
l) [(2x – 11) : 3 + 1].5 = 20
e) 5(x – 3)2 + 17 =142
f) (x + 3).(2x – 4) = 0
g) (x – 5).(3x – 6) = 0
m) 2.3x = 10.312 + 8.274
n) (38 - x)(x + 25) = 0
o) 3x + 1 + 3x + 2 = 324