A triangle has a perimeter of 18a + 6b + 15 and has sides of lengths 5a + 7 and 8a +4b, what is the length of the third side? Write an expression and simplify to find find the solution to the problem.
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Answer:
5a+2b+8
Step-by-step explanation:
Let the sides of the traingle be m,n and q....So,perimeter-(m+n)=q(third side)
=>q=(18a+6b+15)-(5a+7+8a+4b)
=(18a+6b+15) - ( 13a+ 7 +4b)
=5a +2b+8
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