Question

4分之3÷5分之3＋7分之6×3分之1 7分之6×5分之4-7分之6×5分之2 7分之6×6分之5-4分之1÷4分之5

（5分之4—4分之3）×20 （5＋5分之4）×10

Answer 1

4分之3÷5分之3＋7分之6×3分之1
=3/4×5/3+6/7×1/3
=4/5+2/7
=28/35+10/35
=38/35

7分之6×5分之4-7分之6×5分之2
=6/7×4/5-6/7×2/5
=6/7×(4/5-2/5)
=6/7×2/5
=12/35

7分之6×6分之5-4分之1÷4分之5
=6/7×5/6-1/4×4/5
=5/7-1/5
=25/35-7/35
=18/35

（5分之4—4分之3）×20
=4/5×20-3/4×20
=16-15
=1

（5＋5分之4）×10
=5×10+4/5×10
=50+8
=58