x/12乘以360=90
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x/12乘以360=90x/12乘以360=90x/12乘以360=90x/12×360=9030x=90x=3解x/12=90/360x/12=1/4x=12*(1/4)x=3x/12乘以360=9
x/12乘以360=90
x/12乘以360=90
x/12乘以360=90
x/12×360=90
30x=90
x=3
解x/12=90/360
x/12=1/4
x=12*(1/4)
x=3
x/12乘以360=90
x/12=90/360
12*90=360x
x=3
90/360=x/12
360x=12*90
x=3
x/12乘以360=90
12除以x乘以360=90
2x乘以x乘以x=24,求x!
5x减12乘以60%=55x减12乘以60%=5
x乘以九分之x=90解方程.
方程 8x乘以8/5x=12/5
3^2x-7乘以3^x+12=0
x乘以x+1乘以x+2乘以x+3=3024怎么解?
(1+40%)乘以X乘以80%—X=15
lgx 乘以 log10 x=?
0乘以X=多少
(1+40%)乘以X乘以80%—X=15 (1+40%)乘以X乘以80%—X=15
X乘以X等于40 ---------------------X=?
化简f(x)=sin(x/2+π/12)乘以cos(x/2+π/12)-cosx/2乘以cosx/2
12*x=51*y x+y=812乘以X等于51乘以YX加以Y等于8
解方程2乘以0.2x-3乘以0.3x+5乘以0.4x=0.3乘以5
数学题解方程(12+X)乘以9=162
30乘以30X等于10乘以10乘以（12加X）