First, we simplify the inequality by distributing the terms on the right-hand side:
$$
10 - 5d \leq 3d - 15 + 3d
$$
Simplifying further, we combine like terms:
$$
10 - 5d \leq 6d - 15
$$
Adding 5d to both sides, we get:
$$
10 \leq 11d - 15
$$
Adding 15 to both
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