数学题所有的要过程3/5X2/11+2/11÷5/2 48X(1/2+5/6+3/8) 2又5/8X9.25+7又3/8
56又11分之8除以9 (2又2/9×4/5+2又2/9x6.2-5.8x2又2/9-1/5÷9/20)x9/20=?的
某同学做一道数学题:当x=-1时,求10x9+9x8+8x7+7x6+6x5+5x4+4x3+3x2+2x+1的值,由于
小明做一道数学题,“求代数式10x9+9x8+8x7+7x6+6x5+5x4+4x3+3x2+2x+1,当x=-1时的值
1十0x9=1,2+1x9=11,3+12x9=111,4十123x9=1111,5十1234x9=11111,6十12
2x2/1x3+4x4/3x5+6x6/5x7+8x8/7x9+10x10/9x11+12x12/11x13 仔细看看
小学数学题 简便计算7+4又1/3-4又2/15+5又1/20-3又11/28+8又4/77
某同学在做一道题:求代数式10x9+9x8+8x7+7x6+6x5+5x4+4x3+3x2+2x+1当x=-1时的值.由
1x9+2=11,12x9+3=111,123x9+4=1111,求12345X9+6=?,1234567X9+?=11
1.1x4又21/97+40.9÷5又2/19- 4.09x9/97
计算:1/1x2+1/2x3+1/3x4+1/4x5+1/5x6+1/6x7+1/7x8+1/8x9+1/9x10.
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).简便
(-47.65)x2又6/11+(-37.15)x(-2又6/11)+10.5x(-7又5/11).