Ответ:
1)
a:7/13=19
a=7/13×19
a=7/13×19=7×19/13=133/13=10 3/13
2)
x:2 13/16=4/9
x=2 13/16×4/9
x=45/16×4/9=45×4/16×9=5/4=1 1/4
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Ответ:
1)
a:7/13=19
a=7/13×19
a=7/13×19=7×19/13=133/13=10 3/13
2)
x:2 13/16=4/9
x=2 13/16×4/9
x=45/16×4/9=45×4/16×9=5/4=1 1/4