Which expression is equivalent to 2d-6/d²=2d-48/d-3/2d+16?
1) 2d-6/d²=2d-48/d
2) 2d-6/d²=2d-48/d-3/2d
3) 2d-6/d²=2d-48/d-3/2d+16
4) 2d-6/d²=2d-48/d-3/2d+16+6/d²