Question

The perimeter of a triangle is 8a + 9b – 5c. Two of its sides are 2a – 3b + 4c and 6c – 4a + 8b. Find the third side​

Answer 1

Answer:

10a+4b-15c

Step-by-step explanation:

(8a+9b-5c) - (2a-3b+4c)+(6c-4a+8b)

= 8a+9b-5c - ( -2a+5b+10c)

= 8a+9b-5c +2a -5b -10 c

= 10a+4b-15c

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Answer 2

Answer:

10a+4b-15c

Step-by-step explanation:

perimeter of triangle is equal to sum of three sides

first side +second side+third side=8a+9b-5c

(2a-3b+4c)+(6c-4a+8b)+third side =8a + 9b - 5c

(-2a+5b+10c) + third side=8a + 9b - 5c

third side=(8a+9b-5c)-(-2a+5b+10c)

third side=10a+4b-15c

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