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1.__ + 35 = 237 - 35
__ = 237 - 35
__ = 232
2.__ + (-96) = -121
__ - 96 = -121
__ = -121 - 96
__ = -217
3(-390) + ___ = -400
___ = -400 + 390
___ = -10
4. 780 + ___ = -110
___ = -110 - 780
___ = -890
5. ___+(-204)= -300
___ - 204 = -300
___ = -300 + 204
___ = -96
6. ___+(-230) = 500
___ - 230 = 500
___ = 500 + 230
___ = 730
7. -115 + (___) = -720
(___) = -720 +115
(___) = -720 +115
(___) = -605