x/12乘以360=90
x/12乘以360=90
x乘以九分之x=90解方程.
(1+40%)乘以X乘以80%—X=15
化简f(x)=sin(x/2+π/12)乘以cos(x/2+π/12)-cosx/2乘以cosx/2
解方程2乘以0.2x-3乘以0.3x+5乘以0.4x=0.3乘以5
3.14乘以X=16.56-X
解方程 24乘以5+5乘以(x-5)=(24乘以5 +5x)乘以0.9
12乘以231=132乘以21 则 12乘以462= 乘以 ,18乘以891= 乘以 ,24乘以231= 乘以 .
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
y=e^x乘以sinx 求导.
3X-0.8乘以75%=2.