(x-2)十x十(X+2)=360怎麼解
(x-2)十x十(X+2)=360
3x=360
x=120
x分之一360=(x+0.3分之306+x-0.2分之360)除2怎麼解
2×360/x=306/(x+0.3)+360/(x-0.2)去分母720(x+0.3)(x-0.2)=306x(x-0.2)+360x(x+0.3)720x²;+72x-43.2=666x²;+46.8x54x²;+25.2x-43.2=015x²;+7x-12=0x=(-7±√769)/30
x/12乘以360=90
x/12×360=90
30x=90
x=3
12除以x乘以360=90
12/x·360=90
12/x=90/360
12/x=0.25
x=12/0.25
x=48