1.
3x + 1 > x + 5 -> 2x > 4 -> x > 2
5x - 4 > 6 -> 5x > 10 -> x > 2
==> x > 2
2.
25 - 6x <= 4 + x -> 7x >= 21 -> x >= 3
3x + 7.7 > 1 + 4x -> x < 6.7
==> 3 <= x < 6.7
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Answers & Comments
1.
3x + 1 > x + 5 -> 2x > 4 -> x > 2
5x - 4 > 6 -> 5x > 10 -> x > 2
==> x > 2
2.
25 - 6x <= 4 + x -> 7x >= 21 -> x >= 3
3x + 7.7 > 1 + 4x -> x < 6.7
==> 3 <= x < 6.7