1 2 3 4 5 =5.1 1 2 3 4 5 =51 5 4 3 2 1 =51 添加适当的符号,使等式成立
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12345=5.112345=5154321=51添加适当的符号,使等式成立12345=5.112345=5154321=51添加适当的符号,使等式成立12345=5.112345=5154321=5
1 2 3 4 5 =5.1 1 2 3 4 5 =51 5 4 3 2 1 =51 添加适当的符号,使等式成立
1 2 3 4 5 =5.1 1 2 3 4 5 =51 5 4 3 2 1 =51 添加适当的符号,使等式成立
1 2 3 4 5 =5.1 1 2 3 4 5 =51 5 4 3 2 1 =51 添加适当的符号,使等式成立
1÷ (2x 3 +4 )+5 =5.1
1+( 2 x3 +4 )x5 =51
5 x(4+ 3x 2) +1 =51
1/1*2+1/2*3+1/3*4+1/4*5.1/99*100=
1 2 3 4 5 =5.1 1 2 3 4 5 =51 5 4 3 2 1 =51 添加适当的符号,使等式成立
{2x/3+3y/4=1/5.1 5x/6-5y/2=2
1/1*2*3+1/2*3*4+1/3*4*5.1/99*100*101
化简比 1, 24:18 2, 5.1:0.34 3, 3分之4:5分之2 4, 7.5:2.5
1.如果a=-1/4,b=-2,c=-2 3/4,那么|a|+|b|-|c|=()2.+0.125+(+3 1/4)+(-3 1/8)-1/8-(-1/4)3.3.75-[(-3/8)+(-1/2)-(-5/6)+4 2/3]-0.1254.(-1 1/2)-1 1/4+(-2 1/2)-(-3 3/4)-(-1 1/4)5.1-5/12+4/15+1/12-14/15-1 19/20
1.如果a=-1/4,b=-2,c=-2 3/4,那么|a|+|b|-|c|=()2.+0.125+(+3 1/4)+(-3 1/8)-1/8-(-1/4)3.3.75-[(-3/8)+(-1/2)-(-5/6)+4 2/3]-0.1254.(-1 1/2)-1 1/4+(-2 1/2)-(-3 3/4)-(-1 1/4)5.1-5/12+4/15+1/12-14/15-1 19/20
急 在线问数学题1/2+1/3+1/4+1/5.1/2005+1/2006=?急
1/1*2+1/2*3+1/4*5.1/49*50的解法
解下列方程.1.1/4x-1/2=3/4 2.1/4(7x-5)=3/8 3.1/6(2x-1)=1/8(5x+1) 4.1/2x-7=1/6(9x-2)5.1/5x-1/2(3-2x)=1 6.1/3(2x+1)-1/6(5x-1)=17.1/7(2x+14)=4-2x 8.3/10(200+x)-3/10(300-x)=300×9/25
1.y=1+x 2x-3y=-4 2.2a+3b=7 3a+b=7 3.s+4t=6 3s-2t=11 4.5x-2y=3 3x-4y=-1 5.1+a=1/3b 2b-5a=1
1+2+3-4-5+1+1+2+3=
1+3-5*4^2-3=
怎样计算下列式子:1/1*2+1/2*3+1/3*4+1/4*5.1/99*100
1 2 3 4 5=1
1()2()3()4()5=1
1+1-2+3-4+5=?
1.(-1/3)+(-0.75)+(-3 1/4)+(-2 2/3); P.S.2 2/3=二又二分之三2.(-391)+(-4.93)+(-108)+(-5.07);3.(-4 1/3)+(-1/6)+3 5/6+(-0.2);4.2 5/6+(-3/8)+(-1 1/3)+(-1/2);5.1/2+(-2/3)+4/5+(-1/2)+(-1/3);6.0.36+(-7.4)+0.5+(-0.6