能简则简 1、 1/2*1/2+1/2*1/2-1/4+1/2*1/2-1/2 2.、11.1*4除9*3除7.4*23、1/10*12+1/12*14+1/14*16+1/16*18 4、75*4.67+17.9*2.5 5、(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*.*(1-1/49)*(1+1/49)帮帮忙,大哥,
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/08 21:24:16
![能简则简 1、 1/2*1/2+1/2*1/2-1/4+1/2*1/2-1/2 2.、11.1*4除9*3除7.4*23、1/10*12+1/12*14+1/14*16+1/16*18 4、75*4.67+17.9*2.5 5、(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*.*(1-1/49)*(1+1/49)帮帮忙,大哥,](/uploads/image/z/12847104-0-4.jpg?t=%E8%83%BD%E7%AE%80%E5%88%99%E7%AE%80+1%E3%80%81+1%2F2%2A1%2F2%2B1%2F2%2A1%2F2-1%2F4%2B1%2F2%2A1%2F2-1%2F2+2.%E3%80%8111.1%2A4%E9%99%A49%2A3%E9%99%A47.4%2A23%E3%80%811%2F10%2A12%2B1%2F12%2A14%2B1%2F14%2A16%2B1%2F16%2A18+4%E3%80%8175%2A4.67%2B17.9%2A2.5+5%E3%80%81%EF%BC%881-1%2F2%EF%BC%89%2A%EF%BC%881%2B1%2F2%EF%BC%89%2A%EF%BC%881-1%2F3%EF%BC%89%2A%EF%BC%881%2B1%2F3%EF%BC%89%2A.%2A%EF%BC%881-1%2F49%EF%BC%89%2A%EF%BC%881%2B1%2F49%EF%BC%89%E5%B8%AE%E5%B8%AE%E5%BF%99%2C%E5%A4%A7%E5%93%A5%2C)
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能简则简 1、 1/2*1/2+1/2*1/2-1/4+1/2*1/2-1/2 2.、11.1*4除9*3除7.4*23、1/10*12+1/12*14+1/14*16+1/16*18 4、75*4.67+17.9*2.5 5、(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*.*(1-1/49)*(1+1/49)帮帮忙,大哥,
能简则简 1、 1/2*1/2+1/2*1/2-1/4+1/2*1/2-1/2 2.、11.1*4除9*3除7.4*2
3、1/10*12+1/12*14+1/14*16+1/16*18 4、75*4.67+17.9*2.5 5、(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*.*(1-1/49)*(1+1/49)帮帮忙,大哥,
能简则简 1、 1/2*1/2+1/2*1/2-1/4+1/2*1/2-1/2 2.、11.1*4除9*3除7.4*23、1/10*12+1/12*14+1/14*16+1/16*18 4、75*4.67+17.9*2.5 5、(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*.*(1-1/49)*(1+1/49)帮帮忙,大哥,
3. 6/5+7/6+8/7+9/8
=4+1/5+1/8+1/6+1/7
=4+13/40+13/42
=4+13*21/840+13*20/840
=4+13*41/840
=4+533/840
好吧这题我瞎做的=.= 给分!
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