Answer:
nine less than the product of five and seven
Finding the perimetre: 7x+4x-3+x=12x-3
Good luck!
Tonis donation is 3 times longer (6 x 3 = 18)
Let's say

is the measure of the first angle and

is measure of the supplement of

. We know that supplementary angles add up to 180°, so

. We also know that

. Therefore,

. It follows that

, therefore, the first angle is 174° and the second angle is 6°.