Hard Matchstick Puzzles

#7: Fix 9+3=71 hard #8: Fix 8-7=75 hard #12: Fix 6+9=77 hard #15: Fix 9-1=70 hard #32: Fix 5+6=73 hard #33: Fix 8-7=7 hard #36: Fix 7-8=13 hard #38: Fix 8-8=18 hard #39: Fix 5-6=71 hard #42: Fix 8-5=14 hard #43: Fix 7+5=73 hard #48: Fix 0-6=8 hard #52: Fix 6+1=73 hard #54: Fix 0-0=8 hard #60: Fix 5-6=10 hard #61: Fix 9-4=73 hard #64: Fix 9+9=70 hard #66: Fix 8-5=73 hard #71: Fix 0+3=71 hard #75: Fix 8-6=6 hard #76: Fix 9-6=14 hard #78: Fix 9+6=77 hard #83: Fix 3+1=70 hard #84: Fix 8-9=9 hard #85: Fix 9+1=9 hard #87: Fix 7-3=18 hard #89: Fix 6+5=73 hard #92: Fix 9+7=1 hard #93: Fix 2-8=70 hard #103: Fix 6-9=16 hard #107: Fix 3+6=71 hard #110: Fix 1+7=74 hard #113: Fix 6-5=71 hard #117: Fix 1+8=75 hard #119: Fix 9+8=71 hard #121: Fix 9-8=9 hard #125: Fix 6-4=18 hard #132: Fix 6+9=74 hard #133: Fix 5-5=18 hard #134: Fix 9+1=76 hard #136: Fix 6-6=72 hard #139: Fix 9+0=77 hard #145: Fix 9+9=76 hard #149: Fix 7-6=12 hard #151: Fix 9+4=72 hard #159: Fix 1+6=73 hard #162: Fix 8+0=6 hard #167: Fix 9-7=18 hard