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23-01-2019
Mathematics

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What is the value of x?

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1969976289 1969976289

29-01-2019

Answer:

9

Step-by-step explanation:

This means that 9/(9+72)=(3x-20)/(3x+36), or 1/9=(3x-20)/(3x+36). Cross-multiply to get that 27x-180=3x+36, so 24x=216, and x=9.

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