60x+90x=900+225
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60x+90x=900+22560x+90x=900+22560x+90x=900+22560x+90x=900+225150x=1125x=7.560x+90x=900+225150x=1125x=
60x+90x=900+225
60x+90x=900+225
60x+90x=900+225
60x+90x=900+225
150x=1125
x=7.5
60x+90x=900+225
150x=1125
x=1125/150
x=15/2
150x=1125
x=7.5
150x=15*(60+15)=15*75所以,x=7.5
60x+90x=900+225
x/45+x/90-x/60=1 解方程
X/60-X/90=1,求X的值?
60(x+1)=90(x-1)
60(x+1)=90(x-1)
90/x+180=60/x-180
90/X+180=60/X-180
60X-X-90=180
(X+80)/90=(X-80)/60
60x=90x 怎么解
60-1/5x+90=x
225=(100-x)x x=?
(X+X)+(X-X)+(X*X)+(X/X)=100
x/(120-x)=(60-x)/60
x*x-x=90怎么解
90-x=2x(18+x)
x(x-1)(x+1)=60
x/(120-x)=x/60