67×1/4+2又1/2×3.75-4又1/2×25%简便运算,要有算式.
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![67×1/4+2又1/2×3.75-4又1/2×25%简便运算,要有算式.](/uploads/image/z/134611-43-1.jpg?t=67%C3%971%2F4%2B2%E5%8F%881%2F2%C3%973.75-4%E5%8F%881%2F2%C3%9725%25%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%2C%E8%A6%81%E6%9C%89%E7%AE%97%E5%BC%8F.)
67×1/4+2又1/2×3.75-4又1/2×25%简便运算,要有算式.
67×1/4+2又1/2×3.75-4又1/2×25%简便运算,要有算式.
67×1/4+2又1/2×3.75-4又1/2×25%简便运算,要有算式.
67×1/4+2又1/2×3.75-4又1/2×25%
=67/4+5/2×15/4-9/2×1/4
=(134+75-9)/8
=200/8
=15