When solving for something in an equation, for example if I was solving for "a" in this equation: x=v0^2 + 1/2at^2 (kinematic equation) I've seen it reduced and rearranged to look like: a = 2x/t^2 My question is why did 1/2 become 2 and why did it go to the numerator and not stay next to t^2 on the denominator?

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Chapter1: Units, Trigonometry. And Vectors
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Problem 81AP: The nearest neutron star (a collated star made primarily of neutrons) is about 3.00 1018 m away...
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When solving for something in an equation, for example if I was solving for "a" in this equation:

x=v0^2 + 1/2at^2 (kinematic equation)

I've seen it reduced and rearranged to look like:

a = 2x/t^2

My question is why did 1/2 become 2 and why did it go to the numerator and not stay next to t^2 on the denominator?

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