Math

A student earned scores of 85, 83, 90, 94, 88 and 84 on the first six tests in a biology class. What score is needed on the seventh test to produce an 86 average?

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1. (85+83+90+94+88+84+x)/7 = 86

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2. Do I add them together, have the answer and then divide by 7 ?

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3. ok here
(524+x)/7 = 86
524+x = 602
x = 78

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4. Thank you.

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