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(-301)+120+301+(-75)错了是(-301)+125+301+(-75)
题目详情
(-301)+120+301+(-75)
错了 是 (-301)+125+301+(-75)
错了 是 (-301)+125+301+(-75)
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答案和解析
(-301)+120+301+(-75)
=120+301-301-75
=120+(301-301)-75
=120-75
=45
=120+301-301-75
=120+(301-301)-75
=120-75
=45
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