Trắc nghiệm: 1. B; 2. C; 3. A; 4. D
Tự luận:
a) 2x-3 = 0
=> 2x = 3
=> x = 3/2
b) x+3/5 < 5-x/3
=> ( x+3) 3/15 < (5-x)5/15
=> 3x+9 < 25-5x
=> 3x+5x < 25-9
=> 8x < 16
=> x < 2
c) 1/x-1 - 3/x-2 = 1/(x-1)(x+2) ĐKXĐ : x khác 1; x khác 2; -2
=> 1/x-1 + 3/x+2 = 1/(x-1)(x+2)
=> (x+2) + 3(x-1) = 1
=> x+2 + 3x - 1 =1
=> 4x = 1-2+1
=> 4x = 0
=> x = 0