Matchstick Puzzles

#577: Fix 6+5=14 medium #578: Fix 8+9=76 hard #579: Fix 4-2=1 easy #580: Fix 9-0=7 medium #581: Fix 4+1=3 easy #582: Fix 2+9=18 medium #583: Fix 2-9=2 easy #584: Fix 1-9=18 hard #585: Fix 8-9=18 hard #586: Fix 3+2=6 easy #587: Fix 8-4=72 hard #588: Fix 5+4=70 hard #589: Fix 0-8=9 hard #590: Fix 6+5=0 medium #591: Fix 2-8=8 hard #592: Fix 9+8=76 hard #593: Fix 9-2=17 hard #594: Fix 6-7=12 hard #595: Fix 6-5=10 hard #596: Fix 2+0=70 hard #597: Fix 3+6=3 easy #598: Fix 6-4=5 easy #599: Fix 7-4=17 hard #600: Fix 8-7=9 hard #601: Fix 8-4=13 hard #602: Fix 9-6=16 hard #603: Fix 8-0=5 medium #604: Fix 8-9=77 hard #605: Fix 9-2=8 medium #606: Fix 9-1=18 hard #607: Fix 0-4=2 easy #608: Fix 9+5=12 medium #609: Fix 7+3=9 easy #610: Fix 5+6=9 easy #611: Fix 6+7=9 medium #612: Fix 5-4=8 hard #613: Fix 9-7=9 medium #614: Fix 7+3=12 medium #615: Fix 9-5=74 hard #616: Fix 4-1=5 easy #617: Fix 1+5=9 easy #618: Fix 2+3=7 easy #619: Fix 2-8=18 hard #620: Fix 6+0=13 medium #621: Fix 8-9=2 easy #622: Fix 8+5=74 hard #623: Fix 8-6=13 hard #624: Fix 7-1=8 medium