A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a=a1+fm where a1=3. 00 meter/second2 , f=12. 0kilogram⋅meter/second2 and m=7. 00kilogram. First, which of the following is the correct step for obtaining a common denominator for the two fractions in the expression in solving for a ?.

answer:

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explanation:

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for letting me

answer:

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explanation: