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OpenStudy (anonymous):
three-sevenths of of a number is 21. Find the number. the number is 9 the number is 27 the number is 49
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OpenStudy (anonymous):
this is more of a math question
OpenStudy (kobeni-chan):
You would set it up as \[\frac{ 3 }{ 7 }x = 21\] Multiply each side by 7 to get 3x = 147 To get x by itself, divide each side by 3 x = 49
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