En una muestra de 250 tornillos de precisión, la longitud promedio fue de 3.52 cm, con una desviación estándar de 0.52 mm. Si el
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Answer:
Step-by-step explanation:
This question utilizes combining like terms and common denominators. First you have to convert both terms including "a" to have a denominator of 8. You would do this by multiplying both the numerator, and the denominator by the same value. This value in the case of would be 2, and in the case of
the value would be 2. This would result in the equation:
. Then simply combine like terms to get your final answer.