Lucas and Bryan are planning their weekly schedules. Lucas spends 2 hours more on homework than twice the time he spends on exercise. Bryan spends 3 hours less on reading than half the time he spends on homework. If Lucas spends 10 hours on exercise and Bryan spends 6 hours on reading, how many hours does each spend on homework? Let's think step by step and output the final answer within \boxed{}.
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