Tolong Jawab Yang Nomor 1,2,dan 3.Pake Caranya!No Asal!

1.n=(40%+1/2) x250
=(40/100+50/100) x250
=90/100 x250
=9/10 x250
=9x25
=225
2.m=0,25+3/5 =25/100+60/100=85/100
=17/20

n=1/6 x75%=1/6 x75/100
=1/6 x 3/4
=3/24
=1/8
m+n =17/20 + 1/8
=34/40+5/40
=39/40

3. (9/6:0,45)-(30%x1,2)
=(9/6:45/100)-(30/100x12/10)

=(9/6 x 100/45)-(3/10x12/10)
=3/2x20/9 - 36/100
=60/18-36/100
= 30/9-9/25

=10/3-9/25
=250/75 - 36/100
=10/3-9/25
=250/75-27/75
=223/75
=2,97