神马作文网2.7×5.7-2.7 5.3×2.7
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/13 20:48:48
4.8x+14.4-5.7x=12.6-0.9x=-1.8x=2
4-[(+3又1/4)+(+2.75)]=4-[(13/4)+2.75]=4-[3.25+2.75]=4-6=-2
=(6-0.3-3+0.2)*(3-0.5+3-0.3)=(3-0.1)*(6-0.8)=3*6-0.1*6-3*0.8+0.1*0.8=18-0.6-2.4+0.08=18-(0.6+2.4)+0.
5.3*2.7+5.7*2.7-2.7=2.7*（5.3+5.7-1）=2.7*10=273.8+16.2/(2.7*0.8)=3.8+(16.2/2.7)/0.8=3.8+6/0.8=3.8+7.5
2.75-(-1/2)+(-5/6)-(-0.375)-14/3=11/4+1/2-5/6+3/8-28/6=26/8+3/8-33/6=29/8-33/6=87/24-132/24=-45/24=-
3×2.5-3x=5.73x=7.5-5.73x=1.8x=0.6
8.7X=56.55X=6.5
0.25×4.78=0.25×（4+0.78）=0.25×4+0.25×0.78=1+0.195=1.1953.4×9＋3.4=3.4×（9+1)=3.4×10=342.7×4.3＋2.7×5.7=2
2.25×3/5+2.75÷5/3=2.25×3/5+2.75×3/5=3/5×(2.25+2.75)=3/5×5=3
(1).原式=2.7+2.7-2.7=2.7(2).原式=16+36-1=51(3).原式=27÷3×5=45(4).原式=1/2+(1/2)÷(2/9+2/3)=17/16再问：请问：（江西中考）已
12.5*(8-0.8)=12.5*8-12.5*0.8=100-10=902.7*4.3+5.7*2.7=2.7*（4.3+5.7）=2.7*10=270.77*99=0.77*100-0.77=7
2.25×四分之十五-2.75×四分之九+3×225%=2.25×3.75-2.75×2.25+2.25×3=2.25×(3.75-2.75+3)=2.25×4=9
8/38*5.7+2.5/3=5.7/38*8+2.5/3=1.5*8+2.5/3=12+5/6=12又5/6
2.75-5x=2.75x=2.75-2.75x=0.05x=0.01
2.25×3/5+2.75÷5/3+60%=3/5×（2.25+2.75）+60%=3/5×5+0.6=3+0.6=3.6
2.25×15/4-2.75×9/4+3×225%=2.25×（3.75-2.75+3）=2.25×4=9
（1.25乘以2.7乘以5.7）/（8.1乘以0.25乘以1.9）上下各乘以10000：=（125*27*57）/（81*25*19）上下各除以25：=（5*27*57）/（81*19）再各除以27：
14又1/6-2.75+1.5-3又1/4=14又1/6-2又3/4+3/2-3又1/4=14又1/6+9/6-（2又3/4+3又1/4）=14又10/6-6=15又2/3-6=9又2/3请点击下面的