【急!】解:30/60×(x-15)=20/60×(x+5)

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【急!】解:30/60×(x-15)=20/60×(x+5)【急!】解:30/60×(x-15)=20/60×(x+5)【急!】解:30/60×(x-15)=20/60×(x+5)30/60×(x-1

【急!】解:30/60×(x-15)=20/60×(x+5)
【急!】解:30/60×(x-15)=20/60×(x+5)

【急!】解:30/60×(x-15)=20/60×(x+5)
30/60×(x-15)=20/60×(x+5)
1/2(x-15)=1/3(x+5)
3(x-15)=2(x+5)
3x-45=2x+10
x=55