tolong dijawab no 1-4

No 1.
603-(126+172)+288:24 = 603-298+288/24=305+288/24=305*24+288/24=7320+288/24=7608/24=317
No 3.
12*(-7)+(-16):(-2)=-84+ -16/-2=-84*-2-16/-2=168-16/-2=152/-2=-76*-3/-2=-76
No 4 13.14