If 7 is subtracted from three times a number the rrsult is 21 find the number
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Let the number be x
according to question
3x-7 = 21
3x = 21+7
x = 28/3
x = 7.33
according to question
3x-7 = 21
3x = 21+7
x = 28/3
x = 7.33
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