tolong dijawab nomer 3......... nanti dikasih jawaban terbaik

3.
a.2/15-1/2+3/10
=4/30-15/30+9/30
=-11/30+9/30
=-2/30
=-1/15

b.3/7+4/21-13/14
=18/42+8/42-39/42
=26/42-39/42
=-13/42

c.4 2/5 -1 1/3 +2 3/4
=4 24/60 -1 20/60 +2 45/60
=3 4/60 +2 45/60
=5 49/60→349/60

d.10 1/4 +1 2/3 +20 7/8
=10 6/24 +1 16/24 +20 21/24
=11 22/24 +20 21/24
=31 43/24→787/24

e.2,25 + 25% +1 1/2
=2 1/4 +25/100 + 3/2
=9/4+1/4+3/2
=9/4+1/4+6/4
=10/4+6/4
=16/4
=4

semoga bisa membantu...

E.
2¼+25/100+3/2
=9/4+¼+3/2
=9/4+¼+6/4
=16/4.

Semoga Membantu.^_^