3/5+47/13-25/8+1/8-8/13+2/5 = 1 nhé!
=>( \(\frac{3}{5}\)+ \(\frac{2}{5}\)) + (\(\frac{47}{13}\)- \(\frac{8}{13}\)) - (\(\frac{25}{8}\)+ \(\frac{1}{8}\))
=> 1 + 3 - \(\frac{26}{8}\)
=> 4 - \(\frac{26}{8}\)
=> \(\frac{4}{1}\)- \(\frac{26}{8}\)
=> \(\frac{32-26}{8}\)
=> \(\frac{6}{8}\)
=> \(\frac{3}{4}\)
3/5+47/13-25/8+1/8-8/13+2/5
= (3/5+2/5) + (47/13 - 8/13) - (25/8-1/8)
= 5/5 + 39/13 - 24/8
= 1 + 3 - 3
= 1
Đó nha!
= ( 3/5 + 2/5 ) + (47/13 - 8/13 ) + ( 25/8- 1/8 )
= 1 + 3 + 3
= 7