34×3.535-3.5×34.34=34×3.5×1.01-3.5×34×1.01=08+89+899+8999+89999=9+90+900+9000+90000-5=99999-5=999940.67×2.1+0.018×21+8.5×0.79=0.67×2.1+0.18×2.1+8.5×0.79=(0.67+0.18)×2.1+8.5×0.79=0.85×2.1+0.85×7.9=0.85×(2.1+7.9)=0.85×10=8.522222.2×9.99999=22222.2×(10-0.00001)=222222-0.222222=222221.7777781997×19961996-1996×19971997=1997×1996×10001-1996×1997×10001=00.02+0.04+0.06+0.08+……+19.94+19.96+19.98=(0.02+19.98)×999÷2=10×999=999099999×77778+33333×66666=99999×77778+99999×22222=99999×(77778+22222)=99999×100000=9999900000(4又5/6-3又3/4)/(3/14+2/7)=13/12÷1/2=13/6=2又1/6(4.8/1又4/5+3又1/2+7又1/3)*4/9=(2又2/3+7又1/3+3.5)*4/9=(10+3.5)*4/9=13.5*4/9=617.2/【(3又2/5-1.25)*2/3】=17.2/【2.15*2/3】=17.2÷43/3=1.25*5又1/5=5*5+5*1/5=25+1=26(5又2/5-1.8)/[(1.15+13/20)*1又2/3]=3.6/[1.8*5/3]=3.6/3=1.23又5/8*5又1/5+5又1/5*6又3/8=5.2*(3又5/8+6又3/8)=5.2*10=52[3/4-7/8/(5/6+4/5)]*28=[3/4-7/8÷49/30]*28=[3/4-15/28]*28=3/4*28-15/28*28=21-15=6(1.25*4/5-0.76)/(1又3/8+1又1/40)=(1-0.76)/2.4=0.24/2.4=0.1[(0.2+1/3)*4.5]/(8又1/20-6.45)=8/15*4.5/1.6=2.4/1.6=1.5x+3又2/3=5x*9又3/4=7又1/11x/2/5=106又2/3-x=4.256.4*1.7+6又2/5*8.3(4又6/7+1.75)/1又11/14+3又5/62.16-7x=0.061/2x-0.5=5又1/28.16-1.26/0.3*1.5=8.16-4.2*1.5=8.16-6.3=1.868.4*[(1.2+3又1/3)/3.4-1/2]=8.4*[68/16/3.4-1/2]=8.4*[5/4-1/2]=8.4*3/4=6.35.8:x=3又1/2:73.5x=7*5.8x=7/3.5*5.8x=2*5.8x=11.63/10*55-4x=14.516.5-4x=14.54x=2x=0.219.38-4又7/8-5又1/8=1.938-(4又7/8+5又1/8)=19.38-10=9.3813又7/13-(6又3/5+3又7/13)=13又7/13-3又7/13-6又3/5=10-6又3/5=3.41又3/4+[2又3/14-(2又3/14-1.875)]/2又1/12=1又3/4-15/8*12/25=1又3/4-9/10=0.85(9.4-8又2/5)/[(1.1+1/15)*1又7/18]=1/[7/6*25/18]=1÷175/108=108/175
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