4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7= 8/5x15/4= 20/9x21/5= 3/11x2/1= 50/19x19/10= 24/13x26/8= 40/11x22/10= 100/16x16/25= (这些是那一块的）3/1x5/3+2= 2/1+3/1x5/2= 14/9x3/1+3/2= 7/5-9/5x7/5= 1-7/5x25/21= 6/1x(5-3/2)= 8/7x

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4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7= 8/5x15/4= 20/9x21/5= 3/11x2/1= 50/19x19/10= 24/13x26/8= 40/11x22/10= 100/16x16/25= (这些是那一块的）3/1x5/3+2= 2/1+3/1x5/2= 14/9x3/1+3/2= 7/5-9/5x7/5= 1-7/5x25/21= 6/1x(5-3/2)= 8/7x
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4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7= 8/5x15/4= 20/9x21/5= 3/11x2/1= 50/19x19/10= 24/13x26/8= 40/11x22/10= 100/16x16/25= (这些是那一块的）3/1x5/3+2= 2/1+3/1x5/2= 14/9x3/1+3/2= 7/5-9/5x7/5= 1-7/5x25/21= 6/1x(5-3/2)= 8/7x
4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7= 8/5x15/4= 20/9x21/5=
3/11x2/1= 50/19x19/10= 24/13x26/8= 40/11x22/10= 100/16x16/25= (这些是那一块的）3/1x5/3+2= 2/1+3/1x5/2= 14/9x3/1+3/2= 7/5-9/5x7/5= 1-7/5x25/21= 6/1x(5-3/2)= 8/7x7+8/3= (6+5/2)x8/3= (这些要计算的,不能直接等答案）

4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7= 8/5x15/4= 20/9x21/5= 3/11x2/1= 50/19x19/10= 24/13x26/8= 40/11x22/10= 100/16x16/25= (这些是那一块的）3/1x5/3+2= 2/1+3/1x5/2= 14/9x3/1+3/2= 7/5-9/5x7/5= 1-7/5x25/21= 6/1x(5-3/2)= 8/7x
3/11x2/1=6\11 50/19x19/10= 5 24/13x26/8=6 40/11x22/10=8 100/16x16/25=4 3/1x5/3+2=5+2=7 2/1+3/1x5/2=2+7.5=9.5 14/9x3/1+3/2=14\3+3\2=37\6 7/5-9/5x7/5=-28\25 1-7/5x25/21=1-5\3=-2\3 6/1x(5-3/2)=6x-7\2=-21 8/7x7+8/3=8=8\3=32\3 (6+5/2)x8/3=17\2x8\3=68\3

求证：(1+x)(1+x2)(1+x4)(1+x8)=1+x=x2+.+x15请写出全部过程 （-5/12)x8/15x3/2x(-2/3)x0x(-1)= (-1)x(-5/4)x8/15x3/2x(-2/3)x0x(-1)= 的计算过程.（-5/12)x8/15x1/2x(-2/3) 5/3x6/1x5= (10/1+4/1)x4= (9/8+27/4)x27= 39x38/27= 2/1x15/4+3/1x2/1= 7/5x16x5/21= 12x(2/1-3/1+4/1)=7/12x(6/7+3/14)= 5/1+9/4x8/3+6/5= (5/1-7/1)x70= 97x96/5= 15x7/3+15x7/4= (9/8+4/3-3/2)x72= 5/3x8+5/3x2= 72x(2/1-3/1+4/1)= （这些要简便运算的,上 1x8+1=9,12x8+2=98,123x8+3=987,1234x8+4=9876照样子继续四道这样的题? 解方程 6X=3X15 75X减3X =15 7X=25X35 54X=34X2 12X=23X14 10X+3X=91 10X=200X8 解方程5x+2分之1=2 8分之3x+4分之1x15 因式分解:X15+X14+X13+X12+X11+X10+X9+X8+X7+X6+X5+X4+X3+X2+X+1= ( x^14 )( x + 1 ) + ( x^12 )( x + 1 ) +……+ x( x + 1 ) + ( x + 1 )= ( x + 1 )[ ( x^14 + x^12 ) + ( x^10 + x^8 ) + ( x^6 + x^4 ) + x + 1 ]= ( x + 1 )[ ( x^12 )( x + 1 ) + ( x^8 )( 1X8+1=9,12X8+2=98,123x8+3=987,1234x8+4=9876找规律把下面,□填上数字□x8+□=□,□x8+□=□,□x8+□=□,□x8+□=口 下面各题对吗?把不对的改正过来9-4X15分之4=5X15分之4=3分之414分之3+14分之5X8分之7=14分之8X8分之7=2分之1（8分之3+7分之3）X6分之5=15分之6X6分之5=3分之1（8分之7-5分之1）X3分之6X6分之5=2X6分之5=3分 (-5)x8x(-7)x(-0.25)= （-5/12)x8/15x3/2x(-2/3)x0x(-1)= (-1)x(-5/4)x8/15x3/2x(-2/3)x0x(-1)= Lingo 线性函数问题,要求答案是整数解,0或1min x1+x2+x3+x4+x5+x6+x7+x8+x9+x10+x11+x12+x13+x14+x15+x16+x17+x18+x19+x20+x21+x22+x23+x24+x25; x9+x10+x11+x12>=4; 2.5*x1+2*x2+3*x3+2*x4+2.5*x5+2.5*x6+3*x7+2*x8+3*x9+2.5*x10+2*x11+2.5*x12>=12 找规律：1x8+1=9 12x8+2=98 123x8+3=987……123456x8+6=? x+16=1,4X15求这道方程的解 250+250x15.2%=0.9X 4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7= 8/5x15/4= 20/9x21/5= 3/11x2/1= 50/19x19/10= 24/13x26/8= 40/11x22/10= 100/16x16/25= (这些是那一块的）3/1x5/3+2= 2/1+3/1x5/2= 14/9x3/1+3/2= 7/5-9/5x7/5= 1-7/5x25/21= 6/1x(5-3/2)= 8/7x 4分之1+4分之3x4分之1= 11分之6乘8分之7--12分之5乘11分之6= 9--4x15分之4=14分之3+14分之5x8分之7=（8分之3+7分之3）x6分之5= （5x-12）x8=24 计算下面各题,能约分的要约分啊.地等式计算啊啊、、要快,17分之4x5 39分之25x30分之13 9分之7x（3分之2减7分之2） 16分之5x15分之811分之6x15分之7x10 100分之19x8分之3x50