There are two coefficients, 11 for r and 7 for s
Answer:
it is detailed solution. please mark brainlest.
Thank you have a nice day
Answer:we know that all 3 sides are equal
so if side =a
then perimeter =3a
therefore
3a=6n-15
a=6n-15/3
a=2n-5
Just do 11x18x20x14 and u should get it