Medium Arithmetic Puzzles

#3599: 8 _ 2 _ 4 _ 9 = -5 medium #3601: 8 _ 2 _ 4 _ 2 = -4 medium #3602: 8 _ 2 _ 4 _ 3 = -8 medium #3607: 8 _ 2 _ 5 _ 2 = -6 medium #3614: 8 _ 2 _ 5 _ 8 = 12 medium #3616: 8 _ 2 _ 6 _ 4 = 11 medium #3624: 8 _ 2 _ 6 _ 2 = -8 medium #3632: 8 _ 2 _ 7 _ 2 = 14 medium #3635: 8 _ 2 _ 8 _ 4 = 9 medium #3641: 8 _ 2 _ 8 _ 7 = 14 medium #3654: 8 _ 3 _ 2 _ 8 = -4 medium #3655: 8 _ 3 _ 2 _ 4 = 12 medium #3656: 8 _ 3 _ 2 _ 1 = 11 medium #3659: 8 _ 3 _ 2 _ 3 = 9 medium #3660: 8 _ 3 _ 2 _ 4 = 8 medium #3667: 8 _ 3 _ 3 _ 9 = 9 medium #3668: 8 _ 3 _ 3 _ 9 = 7 medium #3669: 8 _ 3 _ 3 _ 6 = 12 medium #3671: 8 _ 3 _ 4 _ 6 = 10 medium #3677: 8 _ 3 _ 4 _ 2 = 8 medium #3679: 8 _ 3 _ 4 _ 2 = 12 medium #3680: 8 _ 3 _ 4 _ 3 = 9 medium #3683: 8 _ 3 _ 4 _ 5 = 11 medium #3684: 8 _ 3 _ 4 _ 6 = 12 medium #3688: 8 _ 3 _ 4 _ 9 = -3 medium #3691: 8 _ 3 _ 6 _ 9 = 10 medium #3692: 8 _ 3 _ 6 _ 4 = 10 medium #3693: 8 _ 3 _ 6 _ 9 = 6 medium #3700: 8 _ 3 _ 6 _ 3 = 12 medium #3701: 8 _ 3 _ 6 _ 4 = 8 medium #3703: 8 _ 3 _ 6 _ 5 = 9 medium #3707: 8 _ 3 _ 6 _ 8 = -4 medium #3709: 8 _ 3 _ 6 _ 9 = -5 medium #3714: 8 _ 3 _ 6 _ 4 = 12 medium #3716: 8 _ 3 _ 6 _ 5 = 11 medium #3717: 8 _ 3 _ 6 _ 7 = 9 medium #3718: 8 _ 3 _ 6 _ 8 = 8 medium #3720: 8 _ 3 _ 6 _ 9 = 7 medium #3723: 8 _ 3 _ 8 _ 6 = 12 medium #3724: 8 _ 3 _ 8 _ 2 = -4 medium #3728: 8 _ 3 _ 8 _ 5 = 15 medium #3732: 8 _ 3 _ 9 _ 3 = 9 medium #3733: 8 _ 3 _ 9 _ 6 = 10 medium #3734: 8 _ 3 _ 9 _ 3 = 7 medium #3735: 8 _ 3 _ 9 _ 6 = 6 medium #3749: 8 _ 4 _ 2 _ 3 = 8 medium #3750: 8 _ 4 _ 2 _ 5 = 12 medium #3754: 8 _ 4 _ 2 _ 3 = -4 medium