问题
填空题
计算：48°39′+67°31′-21°17′×5=______．
答案
48°39′+67°31′-21°17′×5
=48°39′+67°31′-106°25′
=116°10′-106°25′
=9°45′．
故答案为：9°45′．
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计算：48°39′+67°31′-21°17′×5=______．
48°39′+67°31′-21°17′×5
=48°39′+67°31′-106°25′
=116°10′-106°25′
=9°45′．
故答案为：9°45′．