Medium Arithmetic Puzzles

#3755: 8 _ 4 _ 2 _ 4 = -6 medium #3756: 8 _ 4 _ 2 _ 5 = -8 medium #3757: 8 _ 4 _ 2 _ 3 = 12 medium #3761: 8 _ 4 _ 3 _ 6 = 10 medium #3766: 8 _ 4 _ 3 _ 2 = -4 medium #3768: 8 _ 4 _ 3 _ 2 = 12 medium #3769: 8 _ 4 _ 3 _ 3 = 9 medium #3770: 8 _ 4 _ 3 _ 4 = 10 medium #3772: 8 _ 4 _ 3 _ 5 = 11 medium #3773: 8 _ 4 _ 3 _ 6 = 12 medium #3778: 8 _ 4 _ 3 _ 9 = -3 medium #3780: 8 _ 4 _ 4 _ 8 = 10 medium #3787: 8 _ 4 _ 5 _ 2 = -8 medium #3788: 8 _ 4 _ 5 _ 1 = 11 medium #3789: 8 _ 4 _ 5 _ 2 = 8 medium #3803: 8 _ 4 _ 6 _ 8 = 11 medium #3816: 8 _ 4 _ 7 _ 2 = -6 medium #3819: 8 _ 4 _ 7 _ 2 = 12 medium #3822: 8 _ 4 _ 7 _ 4 = 10 medium #3824: 8 _ 4 _ 7 _ 5 = 9 medium #3826: 8 _ 4 _ 7 _ 6 = 8 medium #3830: 8 _ 4 _ 8 _ 2 = 9 medium #3831: 8 _ 4 _ 8 _ 6 = 11 medium #3834: 8 _ 4 _ 8 _ 3 = 12 medium #3839: 8 _ 4 _ 8 _ 4 = 12 medium #3840: 8 _ 4 _ 8 _ 5 = 11 medium #3841: 8 _ 4 _ 8 _ 7 = 9 medium #3842: 8 _ 4 _ 8 _ 8 = 8 medium #3843: 8 _ 4 _ 8 _ 9 = 7 medium #3854: 8 _ 4 _ 9 _ 8 = 10 medium #3855: 8 _ 4 _ 9 _ 9 = 9 medium #3858: 8 _ 5 _ 2 _ 6 = -7 medium #3867: 8 _ 5 _ 2 _ 8 = 12 medium #3876: 8 _ 5 _ 4 _ 1 = 11 medium #3877: 8 _ 5 _ 4 _ 2 = 12 medium #3878: 8 _ 5 _ 4 _ 2 = 8 medium #3891: 8 _ 5 _ 6 _ 2 = -7 medium #3897: 8 _ 5 _ 8 _ 3 = 15 medium #3900: 8 _ 6 _ 2 _ 3 = 12 medium #3901: 8 _ 6 _ 2 _ 4 = 11 medium #3904: 8 _ 6 _ 2 _ 5 = -7 medium #3905: 8 _ 6 _ 2 _ 2 = 12 medium #3912: 8 _ 6 _ 3 _ 9 = 10 medium #3915: 8 _ 6 _ 3 _ 9 = 6 medium #3917: 8 _ 6 _ 3 _ 7 = -6 medium #3918: 8 _ 6 _ 3 _ 8 = -8 medium #3925: 8 _ 6 _ 3 _ 4 = 12 medium #3927: 8 _ 6 _ 3 _ 7 = 9 medium