9. Electricity powered homes and factories. How did electricity change Americans' lives?
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![[tex]7 \frac{7}{8} -3 \frac{1}{4} \\ \\ \frac{7 \times 8 + 7}{8} -3 \frac{1}{4} \\ \\ \frac{56+7}{8} - 3 \frac{1}{3} \\ \\ \frac{63}{8} - 3 \frac{1}{4} \\ \\ \frac{63}{8} - \frac{3 \times 4 + 1}{4} \\ \\ \frac{63}{8} - \frac{12+1}{4} \\ \\ \frac{63}{8} - \frac{13}{4} \\ \\ LCD = 8 \\ \\ \frac{63}{8} - \frac{13 \times 2}{4 \times 2} \\ \\ \frac{63}{8} - \frac{26}{8} \\ \\ \frac{63 - 26}{8} \\ \\ \frac{37}{8} \\ \\ 4 \frac{5}{8} \\ \\ Answer: \fbox {4 \ 5/8} \ or \ \fbox {4.625}](https://tex.z-dn.net/?f=%5Btex%5D7%20%5Cfrac%7B7%7D%7B8%7D%20-3%20%5Cfrac%7B1%7D%7B4%7D%20%5C%5C%20%5C%5C%20%5Cfrac%7B7%20%5Ctimes%208%20%2B%207%7D%7B8%7D%20-3%20%5Cfrac%7B1%7D%7B4%7D%20%5C%5C%20%5C%5C%20%5Cfrac%7B56%2B7%7D%7B8%7D%20-%203%20%5Cfrac%7B1%7D%7B3%7D%20%5C%5C%20%5C%5C%20%5Cfrac%7B63%7D%7B8%7D%20-%203%20%5Cfrac%7B1%7D%7B4%7D%20%5C%5C%20%5C%5C%20%5Cfrac%7B63%7D%7B8%7D%20-%20%5Cfrac%7B3%20%5Ctimes%204%20%2B%201%7D%7B4%7D%20%5C%5C%20%5C%5C%20%5Cfrac%7B63%7D%7B8%7D%20-%20%5Cfrac%7B12%2B1%7D%7B4%7D%20%5C%5C%20%5C%5C%20%5Cfrac%7B63%7D%7B8%7D%20-%20%5Cfrac%7B13%7D%7B4%7D%20%5C%5C%20%5C%5C%20LCD%20%3D%208%20%5C%5C%20%5C%5C%20%5Cfrac%7B63%7D%7B8%7D%20-%20%5Cfrac%7B13%20%5Ctimes%202%7D%7B4%20%5Ctimes%202%7D%20%5C%5C%20%5C%5C%20%5Cfrac%7B63%7D%7B8%7D%20-%20%5Cfrac%7B26%7D%7B8%7D%20%5C%5C%20%5C%5C%20%5Cfrac%7B63%20-%2026%7D%7B8%7D%20%5C%5C%20%5C%5C%20%5Cfrac%7B37%7D%7B8%7D%20%5C%5C%20%5C%5C%204%20%5Cfrac%7B5%7D%7B8%7D%20%5C%5C%20%5C%5C%20Answer%3A%20%5Cfbox%20%7B4%20%5C%205%2F8%7D%20%5C%20or%20%5C%20%5Cfbox%20%7B4.625%7D%20)
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I Hope my answer has come to your Help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead! :)
(Ps. Mark As Brainliest IF Helped!)
-TheOneAboveAll :D