计算-1又3/4-[1/2-(3/4+1/2-1又3/8)+5/8]简便运算,
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计算-1又3/4-[1/2-(3/4+1/2-1又3/8)+5/8]简便运算,
计算-1又3/4-[1/2-(3/4+1/2-1又3/8)+5/8]简便运算,
计算-1又3/4-[1/2-(3/4+1/2-1又3/8)+5/8]简便运算,
-1又3/4-[1/2-(3/4+1/2-1又3/8)+5/8]
=-7/4-1/2+3/4+1/2-11/8-5/8
=-7/4+3/4-(11/8+5/8)
=-1-2
=-3
3/4+1/2等于1 减1又3/8等于3/8 1/2 减3/8 等于1/8 加5/8等于3/4 即 -1又3/4后面总共等于3/4 即结果为 -1
=1又3/4-(1/2-1/2-3/4+1又3/8+5/8)
=1又3/4+3/4-2
=2又1/2-2
=1/2