Question

What number should be subtracted from-6/7 to get 9/10

Answer 1

◦•●◉✿ ANSWER ✿◉●•◦

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let x be the number

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$\frac{ - 6}{7} - x = \frac{9}{10 } \\ \\ \frac{ - 6 - 7x}{7} = \frac{9}{10} \\ ( - 6 - 7x) \times 10 = 9 \times 7 \\ \\ - 60 - 70x = 63 \\ \\ - 70x = 63 + 60 \\ \\ - 70x = 123 \\ x = \frac{123}{ - 70 } \\ \\ x = \frac{ - 123}{70}$

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