Ответ:
90.
a. 1/7+4/7=23/28
b.4/6+1/6=5/6
c.2/5+2/5=4/5
d.1/3+1/3=2/3
e.5/8+1/8=6/8
f.1/4+2/4=3/4
g.4/9+3/9=7/9
h.6/15+7/15=13/15
i.4/20+11/20=15/20
j.5/16+4/16=9/16
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Answers & Comments
Ответ:
90.
a. 1/7+4/7=23/28
b.4/6+1/6=5/6
c.2/5+2/5=4/5
d.1/3+1/3=2/3
e.5/8+1/8=6/8
f.1/4+2/4=3/4
g.4/9+3/9=7/9
h.6/15+7/15=13/15
i.4/20+11/20=15/20
j.5/16+4/16=9/16