Question

$7 \ \frac{3}{4} - 17 \ \frac{5}{8}$
explain please
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Answer 1

7 3/4 - 7 5/8
= (4x7+3)/4 - (8x17+5)/8
= 31/4 - 141/8
= 62/8 - 141/8
= 62-141/8
= (-79)/8
= -9 7/8 (Answer)

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