(2又2/5*37+24*2又1/2-2.4*52)*(1/3+1/12-0.375)用简便运算方法做
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![(2又2/5*37+24*2又1/2-2.4*52)*(1/3+1/12-0.375)用简便运算方法做](/uploads/image/z/131942-38-2.jpg?t=%EF%BC%882%E5%8F%882%2F5%2A37%2B24%2A2%E5%8F%881%2F2-2.4%2A52%EF%BC%89%2A%EF%BC%881%2F3%2B1%2F12-0.375%EF%BC%89%E7%94%A8%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%E6%96%B9%E6%B3%95%E5%81%9A)
(2又2/5*37+24*2又1/2-2.4*52)*(1/3+1/12-0.375)用简便运算方法做
(2又2/5*37+24*2又1/2-2.4*52)*(1/3+1/12-0.375)
用简便运算方法做
(2又2/5*37+24*2又1/2-2.4*52)*(1/3+1/12-0.375)用简便运算方法做
原式=(12/5*37+12/5*25-12/5*52)*(1/3+1/12-3/8)
=12/5*(37+25-52)*(8/24+3/24-9/24)
=12/5*10*1/12
=2