Q [776/780] - Universityku

$9 frac{1}{7} - frac{8}{9}$
*wajib menggunakan cara!*
tidak pakai cara otw report:)
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bener-bener kesel( ꈍᴗꈍ)
pas ditanya kenapa report jawabnya 'ha'…

Q [776/780]

$9 frac{1}{7} - frac{8}{9} \ \ = frac{64}{7} - frac{8}{9} \ \ = frac{64 times 9}{7 times 9} - frac{8 times 7}{9 times 7} \ \ = frac{576}{63} - frac{56}{63} \ \ = frac{576 - 56}{63} \ \ = frac{520}{63}$