Answer: 8x+3y
Step-by-step explanation:
You will need to subtract double the length by the perimiter since there are 2 sides of length
15x + 17y - (7/2x + 7y)2 =?
(15x + 17y) - (14/2x + 14y)=?
(15x+17y) - (7x + 14y)
Normally we would follow BPEMDAS but because there are not like terms in the parenthesis this is not necessary
8x+3y