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2 / 9 - ( 3 / 8 + 2 / 5 x 8 / 4 ) x 3 / 4?

2 / 9 - ( 3 / 8 + 2 / 5 x 8 / 4 ) x 3 / 4.

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Melisia
9

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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B9%7D-%5Cfrac%7B141%7D%7B160%7D%3D%5Cfrac%7B2%5Ccdot%20%5C%3A160%7D%7B1440%7D-%5Cfrac%7B141%5Ccdot%20%5C%3A9%7D%7B1440%7D%3D%5Cfrac%7B2%5Ccdot%20%5C%3A160-141%5Ccdot%20%5C%3A9%7D%7B1440%7D%3D-%5Cfrac%7B949%7D%7B1440%7D%20" />.