solve the equation. 1/2x + 1/4x = 16   it says the correct answer is 21.3, but I don't kow how to get...

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solve the equation.

1/2x + 1/4x = 16

 

it says the correct answer is 21.3, but I don't kow how to get that answer. I need to show my work.

    • 10 years ago
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