Respuesta :

Answer:

6.73E-8 I think

Step-by-step explanation:

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Answer:

[tex]7.4 \times {10}^{ - 8} - 6.7 \times {10}^{ - 9} \\ = (7.4 - 6.7) {10}^{ - 8 + ( - 9)} \\ = 0.7 \times {10}^{-17} [/tex]

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