5-(2,8-3,7:9,14)•15=

5-(2,8-3,7:9,14)•15≈ -31
1) 3,7:9,14≈0,405
2) 2,8-0,405≈2,395
3) 2,395×15=35,925
4) 5-35,925= - 30,925 ≈ - 31