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Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.
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The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.
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Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?
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1/3x = 5 - 1/3x what is the solution of this equation?...
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