(X-15)/15=(X+60)/60
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![(X-15)/15=(X+60)/60](/uploads/image/z/170251-43-1.jpg?t=%28X-15%29%2F15%3D%28X%2B60%29%2F60)
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(X-15)/15=(X+60)/60
(X-15)/15=(X+60)/60
(X-15)/15=(X+60)/60
60(X-15)=15(X+60)
60X-900=15X+900
45X=1800
X=40
x/(x/12+x/15)*(x/12-x/15)=60
(X-15)/15=(X+60)/60
(45% x + 15) / x = 60% x怎么解
45x+15=60x-60
40x+15=60x-60
45x-15=60x-60
75%X-15=60%X+15
4(X+X+15)=640-60
60%x-15%x=27
x/45=x/60-15
4X+15=6X-60
(x-15)/45=(x/60)+1
(32-2X)(15-X)=60
60%x-15+69=x
算出方程:x/60+x(60-5)/(x+5)+[15-5x/60-5x(60-5)/(x+5)/60=x/60+(15-x)/5
x+x=x+15
x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4(x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1
60x+50x=60(x+15)+40(x+15)帮忙解一下