Question 1099444
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<pre>
{{{(1/3)*x - (1/10)*x}}} = 63    =====>  Multiply both sides by 30 to get

10x - 3x = 63*30  ====>  7x = 63*30  ====>  {{{(63*30)/7}}} = 9*30 = 270.
</pre>

<U>Answer</U>.  The number is 270.