Medium Arithmetic Puzzles

#4416: 9 _ 6 _ 2 _ 3 = 6 medium #4419: 9 _ 6 _ 2 _ 5 = -2 medium #4421: 9 _ 6 _ 2 _ 6 = 9 medium #4422: 9 _ 6 _ 2 _ 6 = -3 medium #4423: 9 _ 6 _ 2 _ 7 = -4 medium #4425: 9 _ 6 _ 2 _ 8 = -5 medium #4426: 9 _ 6 _ 2 _ 9 = -6 medium #4433: 9 _ 6 _ 3 _ 9 = 7 medium #4436: 9 _ 6 _ 3 _ 7 = -5 medium #4444: 9 _ 6 _ 4 _ 8 = 6 medium #4445: 9 _ 6 _ 4 _ 2 = 6 medium #4446: 9 _ 6 _ 4 _ 8 = -3 medium #4448: 9 _ 6 _ 4 _ 2 = 8 medium #4451: 9 _ 6 _ 4 _ 3 = 9 medium #4453: 9 _ 6 _ 4 _ 4 = 10 medium #4460: 9 _ 6 _ 4 _ 8 = -2 medium #4462: 9 _ 6 _ 4 _ 9 = -3 medium #4464: 9 _ 6 _ 5 _ 2 = -6 medium #4470: 9 _ 6 _ 7 _ 3 = -5 medium #4473: 9 _ 6 _ 8 _ 4 = -3 medium #4474: 9 _ 6 _ 8 _ 4 = 6 medium #4477: 9 _ 6 _ 8 _ 2 = 10 medium #4480: 9 _ 6 _ 8 _ 3 = 9 medium #4482: 9 _ 6 _ 8 _ 4 = 8 medium #4484: 9 _ 6 _ 8 _ 5 = 7 medium #4493: 9 _ 6 _ 9 _ 3 = 7 medium #4495: 9 _ 6 _ 9 _ 2 = 12 medium #4498: 9 _ 7 _ 2 _ 4 = -5 medium #4499: 9 _ 7 _ 3 _ 6 = -5 medium #4506: 9 _ 7 _ 4 _ 2 = -5 medium #4507: 9 _ 7 _ 4 _ 8 = -5 medium #4508: 9 _ 7 _ 6 _ 3 = -5 medium #4509: 9 _ 7 _ 8 _ 4 = -5 medium #4514: 9 _ 8 _ 2 _ 3 = -3 medium #4518: 9 _ 8 _ 3 _ 2 = -3 medium #4531: 9 _ 8 _ 4 _ 6 = -3 medium #4532: 9 _ 8 _ 4 _ 7 = -5 medium #4544: 9 _ 8 _ 4 _ 8 = 10 medium #4545: 9 _ 8 _ 4 _ 9 = 9 medium #4550: 9 _ 8 _ 6 _ 4 = -3 medium #4552: 9 _ 8 _ 6 _ 9 = -3 medium #4554: 9 _ 8 _ 6 _ 2 = 10 medium #4556: 9 _ 8 _ 6 _ 3 = 9 medium #4558: 9 _ 8 _ 6 _ 4 = 8 medium #4560: 9 _ 8 _ 6 _ 5 = 7 medium #4561: 9 _ 8 _ 6 _ 6 = 6 medium #4567: 9 _ 8 _ 7 _ 4 = -5 medium #4570: 9 _ 8 _ 9 _ 6 = -3 medium