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Задача V659:
Задача 660:
Задача 661:
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To solve the first inequality,
, first distribute the terms:
. Combine like terms to get:
. Subtract
from both sides to arrive at
, and then isolate
to find
.
For the second one,
, start by expanding:
. This simplifies to
. Bring like terms together:
leads to
.
And lastly, solve
by distributing to get
. This simplifies to
, or
, which gives
. Happy solving!