x等于几?2x=100+503x=100+200
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x等于几?2x=100+503x=100+200x等于几?2x=100+503x=100+200x等于几?2x=100+503x=100+2002X=100+502X=150X=753X=100+20
x等于几?2x=100+503x=100+200
x等于几?
2x=100+50
3x=100+200
x等于几?2x=100+503x=100+200
2X=100+50
2X=150
X=75
3X=100+200
3X=300
X=100
1.2x = 150 => x = 150/2 = 75
2.3x = 300 => x = 300/3 = 100
x等于几?2x=100+503x=100+200
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