(1+40%)乘以X乘以80%—X=15
(1+40%)乘以X乘以80%—X=15
shuihuijiezhedaofangcheng 1/3x乘以0.5+1/4(88-x)乘以0.7=15谢谢
X 乘以 (1+50%)乘以80%+(2000-X)乘以(1+40%)乘以80%=2000+300 麻烦把上面的每一项都
方程:15乘以(3x-8)-4乘以(2x+3)=6乘以(4x-4)-4怎么解
1乘以2分之x+2乘以3分之x+.+2012乘以2013分之x=2012
解方程 (x+x+三分之一x)乘以3=308 0.3x+0.2乘以(160-x)=36 x+10=40%乘以(36-x+
60乘以(x减1)等于40乘以(x加1)怎么做
根号下2乘以80乘以X除以1,等于800,求未知数X,
(1+根号2)乘以x的平方-(1-根号2)乘以X=0怎么解
解方程2乘以0.2x-3乘以0.3x+5乘以0.4x=0.3乘以5
7—0.5x=1.25x(乘以)6
X的平方+【根号三+1】乘以X=0