2/1乘以3/4-4/3x=6/1

=3乘以2乘以1,=4乘以3乘以2乘以1,=5乘以4乘以3乘以2乘以1,那么100!除以99! 方程:15乘以(3x-8)-4乘以(2x+3)=6乘以(4x-4)-4怎么解 2乘以1+4乘以3+6乘以5直接加到50乘以49 2乘以x的平方加上3乘以x加上1与4乘以x的平方减去4乘以x减去3的公因式是什么 1乘以2乘以3乘以4乘以5乘以.100积有几个零 一乘以二乘以三分之一加2乘以3乘以4分之一+3乘以4乘以5分之1+……+48乘以49乘以50分之1. 1乘以2乘以3分之1+2乘以3乘以4分之1+3乘以4乘以5分之1+4乘以5乘以6分之1+········+48乘以49乘 shuihuijiezhedaofangcheng 1/3x乘以0.5+1/4（88-x)乘以0.7=15谢谢 观察1乘以2乘以3乘以4+1=25=5² 2乘以3乘以4乘以5+1=121=11² 化简1：括号3x三次方-2乘以括号X+4减括号x平方-3乘以括号3X-:2:9乘以括号x+2乘以括号x-2减括号3X-2 1乘以2分之x+2乘以3分之x+.+2012乘以2013分之x=2012 1乘以2乘以3乘以4乘以一直乘到100等于多少?