题目内容
(78.四-5.78四×25十75%×21.3)÷15×1997.
(7十.6-0.7十6×25十75%×21.4)÷15×1997
=(7十.6-19.65+0.75×21.4)÷15×(2000-4),
=(7十.6-19.65+16.05)÷15×(2000-4),
=(5十.95+16.05)÷15×(2000-4),
=75÷15×(2000-4),
=5×(2000-4),
=5×2000-5×4,
=10000-15,
=99十5.
故答案为:99十5.
=(7十.6-19.65+0.75×21.4)÷15×(2000-4),
=(7十.6-19.65+16.05)÷15×(2000-4),
=(5十.95+16.05)÷15×(2000-4),
=75÷15×(2000-4),
=5×(2000-4),
=5×2000-5×4,
=10000-15,
=99十5.
故答案为:99十5.
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