abrooke140239 abrooke140239

23-04-2021
Mathematics

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PLZZ HELP ILL MAKE YOU A BRAINIEST
Find x

PLZZ HELP ILL MAKE YOU A BRAINIEST Find x class=

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aminerassam aminerassam

23-04-2021

Answer:

x = 3

Explanation:

(30-x)/(21-x) = 9/6

(30-x)/(21-x) = 3/2

(21-x)×3/2 = 30-x

(63-3x)/2 = 30-x

63 - 3x = 60 - 2x

63 - 60 = 3x - 2x

x = 3

check:

9/6 = (30-x)/(21-x)

9/6 = (30-3)/(21-3)

9/6 = 27/18

9/6 = 27/18 = 3/2 = 1.5

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