200(x+5)=300(x+3)怎么解?

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200(x+5)=300(x+3)怎么解?
200(x+5)=300(x+3)怎么解?

200(x+5)=300(x+3)怎么解?
200(x+5)=300(x+3)
2(x+5)=3(x+3)
2x+10=3x+9
3x-2x=10-9
x=1

200x+1000=300x+900
100x=100
x=1

200(x+5)=300(x+3)
两边同除以100得
2(x+5)=3(x+3)
2x+10=3x+9
2X-3X=9-10
-X=-1
X=1

200x+1000=300x+900 移项得100x=100 所以x=1

200x+1000=300x+900
100=100x
x=1