(50+6.8x)/(90+15.3x)=0.492如何解x

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(50+6.8x)/(90+15.3x)=0.492如何解x
(50+6.8x)/(90+15.3x)=0.492如何解x

(50+6.8x)/(90+15.3x)=0.492如何解x
50+6,.8x=0.492*(90+15.3x)
50+6,.8x=44.28+7.5276x
5.72=0.7276x
x=7.9

(50+6.8x)/(90+15.3x)=0.492如何解x 0.492/((50+6.8x)/(90+15.3x))=0.492如何解x 90-x=50+x x+ x+(x*50%)=1.5X? 90/(x-90)=(2x-50)/(x+50) 六题解方程：x+75%x=140 x-40%x=96 x-76%x=36 4x+50%x=90 60%x-30=120 x+50%x=45 90%(x+35%x)-50=x+20%x怎么解? 4X+8.60x2=30 4X-X=39 7X+90x7=1463 3X-2+X=50 X=多少 (是小题,格式, x x X x x x x x x x