Question

the two adjacent sides of a rectangle are 6a+9b and 8a -4b. find the perimeter.​

Answer 1

Answer:

(28a + 10b)

Step-by-step explanation:

$l = 6a + 9b \\ b = 8a \: - 4b \\ \\ perimeter = 2(l + b) \\ \\ = 2(6a + 9b + 8a - 4b) \\ \\ = 2(14a + 5b) \\ \\ = 28a + 10b$

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