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Please help me solve the following questions.
Brian is 4 years older than Bob while Bob is 11 years older than Mark.
If their combined age is 86 years, how old is Brian?
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x x+11 (x+11)+4
Mark's age Bob's age Brian's age
(youngest)
Equation:
x + (x+11) + (x+11)+4 = 86.
Now solve it.