B) (x + 0,15) / 4,1 = (x - 2,4) / 2,4

1. Cross-multiply: 2,4(x + 0,15) = 4,1(x - 2,4).
2. Distribute: 2,4x + 0,36 = 4,1x - 9,84.
3. Isolate x: 0,36 + 9,84 = 4,1x - 2,4x => 10,2 = 1,7x.
4. Solve for x: x = 10,2 / 1,7 = 6.