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填空题
If x + 9 is 50% greater than x, then what is the value of x?____
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解析：
根据题干得知x+9= 1.5x，减9，则9=0.5x。两边乘2，则18=x。
根据题干得知x+9= 1.5x，减9，则9=0.5x。两边乘2，则18=x。
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