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Ответ

Ответ дан
111niger

1.

-3,5-(-1,43)=-3,5+1,43=-2,07

2.

2,6*4целых3/13=2ц.6/10*4ц.3/13=

=26/10*55/13=13/5*55/13=

=11

3.

2¾:1ц.5/6*10=15

1действие.2¾:1ц.5/6=11/4:11/6=

=11/4*6/11=3/2=1½

2действие.1½*10=1,5*10=15

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