Tìm x biết |2x + 1| = |3x - 2|

Tìm x:

a) |2x + 1| = |3x - 2|

b) |2 + 3x| = |4x - 3|

c) | 5/4x - 7/2 | = | 5/8x + 3/5 |

d) | 7/8x + 5/6 | - |1/2x + 5 | = 0