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Ответ:


Пошаговое объяснение:

1) 2х+3х=х+6

2х+3х-х=6

4х=6

х=6:4

х=1.5


2) 4у-у=2у-8

4у-2у-у=-8

у=-8


3) 25х-16х=3х+60

25х-16х-3х=60

6х=60

х=60:6

х=10


6х-4х=3х+9

6х-4х-3х=9

-х=9

х=-9

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