Question

tolong yang bisa pintar banget nomor 1 sampai nomor 3 dengan caranya yang lengkap

Answer 1

No.1
a.5 per 8
b.1 1per 2
c 1per 2
no.2
a. 1per4,6per12,2per3
b.1per8,2per6,3per4
no.3
a.1 1per 20
b.4 2per5
c.21per32

Answer 2

1.
a.25/40= 25:5/40:5=5/8
b.180/120= 180:60/120:60=3/2=1 1/2
c.180/360= 180:90/360:90=2/4=1/2
2.
a.1/8,2/6,3/4=3/24,8/24,18/24
urutan terkecil =1/8,2/6,3/4
b.2/3,4/5,5/6,6/10= 20/30,24/30,25/30,18/30
urutan terkecil=6/10,2/3,2/5,5/6
disamakan penyebutnya
3.
a.7/10 : 3/4 x12/6=(7/10x4/3)x1/2
=28/30x1/2 =28/60=7/15
b.3 1/4+2 1/2 : 3 1/4 - 1 1/4
=(13/4+5/2):(13/4-5/4)
=(13/4+10/4):(13/4-5/4
=23/4:8/4
=23/4x4/8
=92/32 = 2 28/32
=2 7/8
c.20:(5/8+1/4)x3/4
=20:(5/8+2/8)x3/4
=20:(7/8x3/4)
=20:21/32
=20x32/21
=30 10/21