Question

уравнение :(
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Answer 1

12 13/45-(y-5 17/45)=3 23/45
y- 5 17/45= 12 13/45-3 23/45
y-5 17/45=8 35/45
 y=5 17/45+8 35/45
y=13 52/45=14 7/45

Answer 2

спс

Answer 3

нез)

Answer 4

:) :)