6.5:6=_:18
a.15
b.16
c.17
d.18
7.4:_=16:24
a.6
b.4
c.5
d.7
8.18:12=12:_
a.7
b.8
c.9
d.10
9.20:24=_:6
a.4
b.7
c.6
d.5
10._:6=28:84
a.2
b.3
c.4
d.5​