1,
=(8/7+1/3)/(3/4)
=(24/21+7/21)*4/3
=31/21*4/3=124/63
2,
=8-10/13/(5/26)-5/8
=8-10/13*26/5-5/8
=8-4-5/8
=4-5/8
=32/8-5/8
=27/8
1,
=(8/7+1/3)/(3/4)
=(24/21+7/21)*4/3
=31/21*4/3=124/63
2,
=8-10/13/(5/26)-5/8
=8-10/13*26/5-5/8
=8-4-5/8
=4-5/8
=32/8-5/8
=27/8